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Vital articles is a list of subjects for which Wikipedia should have corresponding high-quality articles. It serves as a centralized watchlist to track the status of Wikipedia's most essential articles. This is one of the sub-lists of the fifty thousand article Vital articles/Level 5 and is currently under construction.

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The progress bar is auto-updated via category count, and the symbols and article counts are updated daily by User:cewbot. Please read the FAQ before modifying the article list.

Quota 2,400 articles.

Total 2,389 articles.

Class #Articles
FA 173
GA 247
B 434
C 752
LIST 7
FFA 17
DGA 16
Start 690
Stub 85

General classifications

This section contains 9 articles.

  1. Aquatic animal
  2. Bilateria (Level 4)
  3. Chordate (Level 4)
  4. Deuterostome
  5. Ediacaran biota
  6. Invertebrate (Level 4)
  7. Megafauna
  8. Protostome
  9. Worm

Animal breeds and hybrids

This section contains 123 articles.

Cats

This section contains 23 articles.

  1. Abyssinian cat
  2. American Shorthair
  3. Balinese cat
  4. Birman
  5. Burmese cat
  6. Cornish Rex
  7. Devon Rex
  8. Moggy
  9. Exotic Shorthair
  10. Himalayan cat
  11. Maine Coon
  12. Manx cat
  13. Oriental Shorthair
  14. Persian cat
  15. Ragdoll
  16. Ragamuffin cat
  17. Russian Blue
  18. Siamese cat (Level 4)
  19. Somali cat
  20. Sphynx cat
  21. Tabby cat
  22. Tonkinese cat
  23. Turkish Angora

Cattle

This section contains 17 articles.

  1. Aberdeen Angus
  2. American Brahman (Level 4)
  3. Charolais cattle
  4. Chianina
  5. Corriente
  6. Guernsey cattle
  7. Hereford cattle (Level 4)
  8. Highland cattle
  9. Holstein Friesian (Level 4)
  10. Limousin cattle
  11. Jersey cattle
  12. Simmental cattle
  13. Spanish Fighting Bull
  14. Texas Longhorn

Miniature cattle

This section contains 3 articles.

  1. Australian Lowline
  2. Dexter cattle
  3. Vechur cattle

Chickens

This section contains 5 articles.

  1. Australorp
  2. Leghorn chicken
  3. Plymouth Rock chicken
  4. Rhode Island Red
  5. Silkie

Dogs

This section contains 32 articles.

  1. Free-ranging dog
    1. African village dog
    2. Pye-dog
  2. Gun dog (Level 4)
    1. Pointing dog
    2. Retriever
    3. Setter
    4. Spaniel
    5. Water dog
  3. Herding dog (Level 4)
    1. Collie
  4. Hound (Level 4)
    1. Scent hound
      1. Basset
      2. Coonhound
      3. Foxhound
    2. Sighthound
      1. Greyhound
  5. Livestock guardian dog
  6. Mastiff (Level 4)
    1. Bulldog type
  7. Mongrel
    1. Dog crossbreed
  8. Spitz (Level 4)
    1. Husky
    2. Laika (dog type)
  9. Terrier (Level 4)
    1. Bull and terrier
    2. Fell Terrier
    3. Fox Terrier
  10. Toy dog
    1. Bichon

Donkeys

This section contains 4 articles.

  1. Amiatina
  2. Baudet du Poitou
  3. Corsican donkey
  4. North American donkeys

Goats

This section contains 5 articles.

  1. Angora goat
  2. Alpine goat
  3. Cashmere goat
  4. Kinder goat
  5. Nigerian Dwarf goat

Horses

This section contains 11 articles.

  1. Arabian horse (Level 4)
  2. Andalusian horse (Level 4)
  3. Appaloosa
  4. Clydesdale horse
  5. Friesian horse (Level 4)
  6. Lipizzan
  7. Miniature horse
  8. Palomino
  9. Pony (Level 4)
    1. Shetland pony
  10. Thoroughbred (Level 4)

Hybrids

This section contains 8 articles.

  1. Bovid hybrid
  2. Canid hybrid
  3. Hinny
  4. Mule (Level 4)
  5. Panthera hybrid
  6. Sheep–goat hybrid
  7. Ursid hybrid
  8. Zebroid

Pigeons

This section contains 3 articles.

  1. Domestic pigeon
    1. Fancy pigeon
    2. Homing pigeon

Pigs

This section contains 3 articles.

  1. Berkshire pig
  2. Black Iberian pig
  3. Vietnamese Pot-bellied

Rabbits

This section contains 5 articles.

  1. Angora rabbit
  2. Chinchilla rabbit
  3. Dwarf rabbit
  4. Flemish Giant rabbit
  5. Rex rabbit

Sheep

This section contains 5 articles.

  1. Jacob sheep
  2. Leicester Longwool
  3. Merino (Level 4)
  4. New Zealand Romney
  5. Rambouillet sheep

Turkeys

This section contains 2 articles.

  1. Broad Breasted White turkey
  2. Norfolk Black

Individual animals

This section contains 15 articles.

  1. Balto
  2. Bucephalus
  3. Dolly (sheep)
  4. Hachikō
  5. Jumbo
  6. Koko (gorilla)
  7. Laika
  8. Lonesome George
  9. Man o' War
  10. Phar Lap
  11. Punxsutawney Phil
  12. Rin Tin Tin
  13. Seabiscuit
  14. Secretariat (horse)
  15. Tilikum (orca)

Vertebrates

This section contains 1684 articles.

General classifications

This section contains 6 articles.

  1. Vertebrate (Level 4)
  2. Craniate
  3. Gnathostomata (Level 4)
  4. Tetrapod (Level 4)
  5. Amniote
  6. Archosaur

Mammals

This section contains 598 articles.

Mammals: General

This section contains 21 articles.

  1. Mammal (Level 3)
  2. Astrapotheria
  3. Colugo
  4. Hyaenodonta
    1. Hyaenodon
  5. Litopterna
    1. Macrauchenia
  6. Marine mammal
  7. Mesonychia
    1. Mesonychidae
  8. Notoungulata
    1. Toxodon
  9. Oxyaenidae
  10. Pangolin (Level 4)
  11. Pantodonta
    1. Coryphodon
  12. Saber-toothed predator
  13. Taeniodonta
  14. Treeshrew
  15. Uintatherium
  16. Ungulate

Stem-mammals

This section contains 8 articles.

  1. Mammaliaformes
    1. Castorocauda
    2. Megazostrodon
    3. Multituberculata
    4. Eomaia
    5. Euharamiyida
    6. Eutriconodonta
      1. Repenomamus

Afrotheria

This section contains 33 articles.

Proboscidea

This section contains 21 articles.

  1. Proboscidea (Level 4)
  2. Deinotheriidae
    1. Deinotherium
  3. Elephantidae
    1. Elephant (Level 4)
      1. African bush elephant
      2. African forest elephant
      3. Asian elephant
      4. Dwarf elephant
      5. North African elephant
    2. Mammoth (Level 4)
      1. Columbian mammoth
      2. Woolly mammoth
  4. Gomphothere
    1. Anancus
  5. Mammutidae
    1. Mastodon
  6. Moeritherium
  7. Platybelodon
  8. Stegodontidae
    1. Stegodon

Sirenia

This section contains 4 articles.

  1. Sirenia (Level 4)
    1. Dugong
    2. Manatee
    3. Steller's sea cow

Other afrotheres

This section contains 8 articles.

  1. Aardvark (Level 4)
  2. Arsinoitherium
  3. Desmostylia
  4. Elephant shrew
  5. Giant otter shrew
  6. Golden mole
  7. Hyrax (Level 4)
  8. Tenrec

Bats

This section contains 10 articles.

  1. Bat (Level 4)
  2. Megabat (Level 4)
    1. Pteropus (Level 4)
      1. Indian flying fox
  3. Microbat (Level 4)
    1. Bulldog bat
    2. Honduran white bat
    3. Horseshoe bat
    4. Vampire bat (Level 4)
    5. Vespertilionidae

Carnivora

This section contains 147 articles.

Carnivora: General

This section contains 1 article.

  1. Carnivora (Level 4)

Bears

This section contains 14 articles.

  1. Bear (Level 4)
  2. American black bear
  3. Arctodus
  4. Asian black bear
  5. Brown bear (Level 4)
    1. Eurasian brown bear
    2. Grizzly bear
    3. Kodiak bear
  6. Cave bear
  7. Giant panda (Level 4)
  8. Polar bear (Level 4)
  9. Sloth bear
  10. Spectacled bear
  11. Sun bear

Canines

This section contains 33 articles.

  1. African wild dog
  2. African wolf
  3. Bat-eared fox
  4. Bush dog
  5. Canidae (Level 4)
  6. Caninae
  7. Canis
    1. Coyote (Level 4)
    2. Coywolf
    3. Dingo (Level 4)
    4. Dog (Level 3)
    5. Ethiopian wolf
    6. Red wolf
    7. Wolf (Level 4)
  8. Wolfdog
  9. Dhole
  10. Dire wolf
  11. Falkland Islands wolf
  12. Fox (Level 4)
    1. Crab-eating fox
    2. Gray fox
    3. Vulpes
      1. Arctic fox
      2. Fennec fox
      3. Red fox
  13. Jackal (Level 4)
    1. Black-backed jackal
    2. Golden jackal
    3. Side-striped jackal
  14. Maned wolf
  15. Nyctereutes
  16. Short-eared dog
  17. South American fox

Felines

This section contains 31 articles.

  1. Felidae (Level 4)
  2. Cat (Level 3)
    1. Feral cat
    2. Wildcat
  3. Caracal
  4. Cheetah (Level 4)
  5. Cougar (Level 4)
  6. Fishing cat
  7. Lynx (Level 4)
    1. Bobcat
  8. Ocelot
  9. Pallas's cat
  10. Rusty-spotted cat
  11. Serval
  12. Neofelis
    1. Clouded leopard
    2. Sunda clouded leopard
  13. Panthera
    1. Jaguar (Level 4)
    2. Leopard (Level 4)
    3. Lion (Level 4)
      1. American lion
      2. Asiatic lion
      3. Barbary lion
    4. Panthera spelaea
    5. Snow leopard (Level 4)
    6. Tiger (Level 4)
      1. Bengal tiger
      2. White tiger
      3. Caspian tiger
      4. Siberian tiger
      5. Sumatran tiger

Mustelidae

This section contains 25 articles.

  1. Mustelidae (Level 4)
  2. Badger
    1. American badger
    2. European badger (Level 4)
    3. Honey badger (Level 4)
  3. Ferret-badger
  4. Ictonychinae
  5. Marten (Level 4)
    1. Beech marten
    2. Sable
    3. Yellow-throated marten
  6. Megalictis
  7. Neogale
    1. American mink
    2. Long-tailed weasel
  8. Otter (Level 4)
    1. Giant otter
    2. Sea otter (Level 4)
    3. Smooth-coated otter
  9. Weasel (Level 4)
    1. European mink
    2. European polecat
      1. Ferret
    3. Stoat (Level 4)
  10. Wolverine (Level 4)

Pinnipeds

This section contains 9 articles.

  1. Pinniped (Level 4)
  2. Eared seal (Level 4)
    1. Harbor seal
    2. Leopard seal
    3. Elephant seal
  3. Earless seal (Level 4)
    1. Fur seal
    2. Sea lion
  4. Walrus (Level 4)

Procyonidae

This section contains 7 articles.

  1. Procyonidae (Level 4)
  2. Bassaricyon
  3. Cacomistle
  4. Coati
  5. Kinkajou
  6. Raccoon
  7. Ringtail

Other carnivora

This section contains 27 articles.

  1. African palm civet
  2. Ailuridae
    1. Red panda
  3. Amphicyonidae
    1. Amphicyon
  4. Asiatic linsang
  5. Borophagus
  6. Eupleridae
    1. Fossa (animal)
  7. Hyena (Level 4)
    1. Aardwolf
    2. Cave hyena
  8. Machairodontinae
    1. Dinofelis
    2. Smilodon (Level 4)
  9. Mephitidae
    1. Skunk (Level 4)
      1. Spotted skunk
  10. Mongoose (Level 4)
    1. Egyptian mongoose
    2. Meerkat
  11. Nimravidae
  12. Viverridae
    1. African civet
    2. Banded palm civet
    3. Binturong
    4. Genet (animal)

Eulipotyphla

This section contains 10 articles.

  1. Erinaceidae
    1. Hedgehog (Level 4)
      1. Domesticated hedgehog
    2. Moonrat
  2. Mole (animal) (Level 4)
    1. Desman
    2. Eastern mole
    3. Star-nosed mole
  3. Shrew (Level 4)
  4. Solenodon

Artiodactyla

This section contains 150 articles.

  1. Artiodactyl (Level 4)
  2. Ruminant (Level 4)

Bovidae

This section contains 43 articles.

  1. Bovidae (Level 4)
  2. African buffalo (Level 4)
  3. Antelope (Level 4)
    1. Addax
    2. Blackbuck
    3. Dik-dik
    4. Duiker
    5. Gazelle (Level 4)
    6. Gerenuk
    7. Greater kudu
    8. Impala (Level 4)
    9. Oryx
      1. Arabian oryx
    10. Saiga antelope
    11. Springbok
    12. Wildebeest (Level 4)
  4. Aurochs (Level 4)
  5. Banteng
  6. Capra (genus) (Level 4)
    1. Alpine ibex
    2. Goat (Level 4)
    3. Markhor
    4. Mountain goat
    5. Wild goat
  7. Cattle (Level 3)
    1. Zebu
  8. Chamois
  9. Gaur (Level 4)
  10. Muskox (Level 4)
  11. Serow
  12. Sheep (Level 3)
    1. Barbary sheep
    2. Bighorn sheep
    3. Dall sheep
  13. Tahr
  14. Takin
  15. Water buffalo (Level 4)
    1. Wild water buffalo
  16. Yak (Level 4)
    1. Wild yak
  17. Bison
    1. Steppe bison
    2. American bison (Level 4)
    3. European bison (Level 4)

Camelidae

This section contains 10 articles.

  1. Aepycamelus
  2. Alpaca (Level 4)
  3. Guanaco (Level 4)
  4. Llama (Level 4)
  5. Vicuña (Level 4)
  6. Camel (Level 4)
    1. Bactrian camel (Level 4)
      1. Wild Bactrian camel
    2. Dromedary (Level 4)
      1. Australian feral camel

Deer

This section contains 16 articles.

  1. Deer (Level 4)
  2. Cervalces
  3. Chital
  4. Elk (Level 4)
  5. European fallow deer
  6. Irish elk
  7. Moose (Level 4)
  8. Muntjac
  9. Père David's deer
  10. Pudu
  11. Red deer (Level 4)
  12. Reindeer (Level 4)
  13. Roe deer
  14. Sika deer
  15. Water deer
  16. White-tailed deer

Giraffidae

This section contains 9 articles.

  1. Giraffidae
  2. Giraffe (Level 4)
    1. Masai giraffe
    2. Northern giraffe
    3. Reticulated giraffe
    4. Southern giraffe
  3. Okapi
  4. Prolibytherium
  5. Sivatherium

Pigs

This section contains 9 articles.

  1. Suidae
    1. Sus (genus) (Level 4)
      1. Bornean bearded pig
      2. Pig (Level 3)
      3. Wild boar (Level 4)
    2. Babirusa
    3. Warthog
    4. Red river hog
  2. Peccary (Level 4)

Other artiodactyla

This section contains 19 articles.

  1. Andrewsarchus
  2. Anoplotheriidae
    1. Anoplotherium
  3. Antilocapridae
    1. Pronghorn (Level 4)
  4. Anthracotheriidae
    1. Anthracotherium
  5. Cainotheriidae
  6. Chevrotain
    1. Dorcatherium
  7. Entelodontidae
    1. Daeodon
  8. Hippopotamus (Level 4)
    1. Pygmy hippopotamus
  9. Merycoidodontoidea
  10. Moschidae
    1. Musk deer
  11. Palaeomerycidae
  12. Protoceratidae

Cetaceans

This section contains 42 articles.

  1. Cetacea (Level 4)
  2. Whale (Level 4)
  3. Evolution of cetaceans
    1. Ambulocetus
    2. Basilosaurus
    3. Dorudon
    4. Livyatan
    5. Odobenocetops
    6. Remingtonocetidae
Baleen whales

This section contains 9 articles.

  1. Baleen whale
  2. Blue whale (Level 4)
  3. Bowhead whale
  4. Fin whale
  5. Gray whale
  6. Humpback whale (Level 4)
  7. Minke whale
  8. Right whale
    1. Southern right whale
Toothed whale

This section contains 24 articles.

  1. Toothed whale
  2. Beaked whale
    1. Mesoplodon
  3. Beluga whale
  4. Dolphin (Level 4)
  5. Oceanic dolphin
    1. Bottlenose dolphin
    2. False killer whale
    3. Orca (Level 4)
    4. Pilot whale
    5. Hector's dolphin
    6. Right whale dolphin
    7. Risso's dolphin
  6. River dolphin
    1. Baiji
    2. Amazon river dolphin
  7. Narwhal
  8. Porpoise (Level 4)
    1. Dall's porpoise
    2. Finless porpoise
    3. Harbour porpoise
    4. Vaquita
  9. Sperm whale (Level 4)
    1. Pygmy sperm whale

Lagomorphs

This section contains 9 articles.

  1. Lagomorpha (Level 4)
  2. Hare (Level 4)
    1. Antelope jackrabbit
    2. European hare
    3. Snowshoe hare
  3. Pika
  4. Rabbit (Level 4)
    1. Cottontail rabbit
    2. European rabbit

Marsupials

This section contains 40 articles.

  1. Marsupial (Level 4)
    1. Didelphodon
    2. Marsupial mole
  2. Sparassodonta
    1. Thylacosmilus
  3. Dasyuromorphia (Level 4)
    1. Numbat
    2. Quoll
    3. Dunnart
    4. Tasmanian devil (Level 4)
    5. Thylacine
  4. Opossum (Level 4)
    1. Virginia opossum
  5. Peramelemorphia (Level 4)
    1. Bandicoot
    2. Macrotis

Diprotodontia

This section contains 24 articles.

  1. Diprotodontia (Level 4)
  2. Macropodiformes
    1. Sthenurus
    2. Kangaroo (Level 4)
      1. Red kangaroo
      2. Eastern grey kangaroo
      3. Western grey kangaroo
    3. Wallaby
      1. Rock-wallaby
    4. Wallaroo
    5. Tree-kangaroo
    6. Potoroo
    7. Quokka
    8. Pademelon
  3. Phalangeriformes
    1. Common brushtail possum
    2. Common ringtail possum
    3. Honey possum
    4. Sugar glider
  4. Vombatiformes
    1. Koala (Level 4)
    2. Wombat
    3. Thylacoleo
    4. Diprotodon

Monotremes

This section contains 3 articles.

  1. Monotreme (Level 4)
  2. Echidna (Level 4)
  3. Platypus (Level 4)

Perissodactyla

This section contains 39 articles.

  1. Perissodactyla (Level 4)
  2. Brontotheriidae
    1. Megacerops
  3. Chalicotheriidae
    1. Chalicotherium
  4. Lophiodon
  5. Palaeotheriidae
    1. Palaeotherium
  6. Rhinocerotoidea
    1. Paraceratherium
    2. Rhinoceros (Level 4)
      1. Elasmotherium
      2. Black rhinoceros
      3. Indian rhinoceros
      4. Javan rhinoceros
      5. Sumatran rhinoceros
      6. White rhinoceros
      7. Teleoceras
      8. Woolly rhinoceros
  7. Tapir (Level 4)
    1. Malayan tapir

Equidae

This section contains 18 articles.

  1. Equidae (Level 4)
  2. Evolution of the horse
    1. Eohippus
  3. Donkey (Level 4)
    1. African wild ass
    2. Kiang
    3. Onager
  4. Hipparionini
    1. Hipparion
  5. Horse (Level 3)
    1. Feral horse
    2. Przewalski's horse
    3. Tarpan
  6. Zebra (Level 4)
    1. Grévy's zebra
    2. Mountain zebra
    3. Plains zebra
      1. Quagga

Primates

This section contains 64 articles.

  1. Primate (Level 3)
  2. Monkey (Level 4)

Apes

This section contains 23 articles.

  1. Ape (Level 4)
    1. Dryopithecus
    2. Gigantopithecus
    3. Hominidae
      1. Homininae
    4. Proconsul (mammal)
  2. Gibbon (Level 4)
    1. Lar gibbon
    2. Siamang
  3. Gorilla (Level 4)
    1. Cross River gorilla
    2. Eastern lowland gorilla
    3. Mountain gorilla
    4. Western lowland gorilla
  4. Orangutan (Level 4)
    1. Bornean orangutan
    2. Sumatran orangutan
    3. Tapanuli orangutan
  5. Pan (genus) (Level 4)
    1. Chimpanzee (Level 4)
    2. Bonobo (Level 4)
  6. Sivapithecus
  7. Human (Level 1)

New World monkeys

This section contains 11 articles.

  1. New World monkey (Level 4)
    1. Capuchin monkey (Level 4)
    2. Howler monkey
    3. Lion tamarin
    4. Marmoset
      1. Pygmy marmoset
    5. Night monkey
    6. Spider monkey (Level 4)
    7. Squirrel monkey
    8. Tamarin
    9. Uakari

Old World monkeys

This section contains 16 articles.

  1. Old World monkey (Level 4)
  2. Cercopithecinae
    1. Baboon (Level 4)
      1. Hamadryas baboon
    2. Chlorocebus
    3. Gelada
    4. Macaque (Level 4)
      1. Crab-eating macaque
      2. Japanese macaque
      3. Mangabey
      4. Rhesus macaque (Level 4)
    5. Mandrill
  3. Colobinae
    1. Black-and-white colobus
    2. Semnopithecus
    3. Proboscis monkey

Strepsirrhini

This section contains 10 articles.

  1. Strepsirrhini (Level 4)
  2. Galago (Level 4)
  3. Lemur (Level 4)
    1. Aye-aye
    2. Indri
    3. Ring-tailed lemur
    4. Ruffed lemur
    5. Sifaka
    6. Subfossil lemur
  4. Slow loris (Level 4)

Other primates

This section contains 2 articles.

  1. Purgatorius
  2. Tarsier (Level 4)

Rodents

This section contains 53 articles.

  1. Rodent (Level 3)
  2. Agouti
  3. Blesmol
  4. Capybara (Level 4)
  5. Nutria (Level 4)
  6. Beaver (Level 4)
  7. Chinchilla
  8. Jerboa
  9. Dormouse (Level 4)
  10. Giant pouched rat
  11. Gopher
  12. Guinea pig (Level 4)
  13. Hamster (Level 4)
  14. Horned gopher
  15. Kangaroo rat
  16. Lemming
  17. Mara (mammal)
  18. Muridae (Level 4)
    1. Gerbillinae
    2. Rat (Level 4)
      1. Black rat
      2. Brown rat (Level 4)
      3. Laboratory rat
      4. Polynesian rat
    3. Mouse (Level 4)
      1. House mouse
      2. Laboratory mouse
  19. Muskrat (Level 4)
  20. Naked mole-rat
  21. Octodon
  22. Pedetes
  23. Porcupine (Level 4)
    1. Old World porcupine
    2. Prehensile-tailed porcupine
  24. Spalax
  25. Squirrel (Level 4)
    1. Callosciurus
    2. Chipmunk
    3. Flying squirrel
    4. Ground squirrel
      1. Groundhog
      2. Marmot (Level 4)
      3. Prairie dog
      4. Spermophilus
    5. Oriental giant squirrel
    6. Pine squirrel
    7. Sciurus
      1. Eastern gray squirrel
      2. Red squirrel
    8. Tree squirrel
    9. Xerini
  26. Viscacha
  27. Vole

Xenarthra

This section contains 11 articles.

  1. Anteater (Level 4)
    1. Giant anteater
    2. Tamandua
  2. Armadillo (Level 4)
    1. Giant armadillo
    2. Glyptodon
  3. Sloth (Level 4)
    1. Ground sloth
      1. Megatherium
      2. Megalonyx
    2. Two-toed sloth

Birds

This section contains 384 articles.

Basics

This section contains 19 articles.

  1. Bird (Level 3)
  2. Bird of prey (Level 4)
  3. Fowl
  4. Seabird (Level 4)
  5. Bustard (Level 4)
    1. Lesser florican
  6. Cuckoo-roller
  7. Falcon (Level 4)
    1. Gyrfalcon
    2. Peregrine falcon (Level 4)
  8. Grebe
  9. Flamingo (Level 4)
  10. Hoatzin (Level 4)
  11. Kagu
  12. Loon (Level 4)
  13. Mousebird
  14. Seriema
  15. Sunbittern
  16. Tropicbird

Accipitrimorphae

This section contains 24 articles.

  1. Accipiter (Level 4)
  2. Bearded vulture
  3. Buteo
  4. Crested caracara
  5. Eagle (Level 4)
    1. Sea eagle
      1. Bald eagle
    2. Bateleur
    3. Golden eagle (Level 4)
    4. Haast's eagle
    5. Harpy eagle
    6. Philippine eagle
    7. Steppe eagle
    8. Wedge-tailed eagle
  6. Elaninae
  7. European honey buzzard
  8. New World vulture (Level 4)
    1. Andean condor
    2. California condor
  9. Old World vulture (Level 4)
    1. Cinereous vulture
    2. Egyptian vulture
  10. Osprey (Level 4)
  11. Secretarybird (Level 4)

Anseriformes

This section contains 27 articles.

  1. Anatidae
  2. Duck (Level 4)
    1. Diving duck
    2. Mallard (Level 4)
    3. Mergini
      1. Eider
      2. Long-tailed duck
      3. Mergus
    4. Northern pintail
    5. Northern shoveler
  3. Goose (Level 4)
    1. Anser (bird)
      1. Domestic goose
      2. Greylag goose
      3. Swan goose
      4. Snow goose
    2. Branta
      1. Canada goose
      2. Nene (bird)
  4. Magpie goose
  5. Moa-nalo
  6. Muscovy duck
  7. Screamer
  8. Tadorna
  9. Swan (Level 4)
    1. Black swan
  10. Whistling duck

Apodiformes

This section contains 8 articles.

  1. Hummingbird (Level 4)
    1. Patagona
    2. Rufous hummingbird
    3. White-necked jacobin
  2. Swift (bird) (Level 4)
    1. Common swift
    2. Swiftlet
  3. Treeswift

This section contains 5 articles.

  1. Nightjar (Level 4)
  2. Frogmouth
  3. Oilbird
  4. Owlet-nightjar
  5. Potoo

Charadriiformes

This section contains 33 articles.

  1. Charadriiformes
  2. Auk (Level 4)
    1. Great auk
    2. Guillemot
    3. Puffin
  3. Buttonquail
  4. Courser
  5. Greater painted-snipe
  6. Jacanidae
  7. Laridae
    1. Gull (Level 4)
      1. Larus
      2. Black-headed gull
    2. Rynchops
    3. Tern (Level 4)
      1. Arctic tern
  8. Lapwing
  9. Oystercatcher
  10. Plover
  11. Pratincole
  12. Sandpiper (Level 4)
    1. Curlew
    2. Dowitcher
    3. Godwit
    4. Phalarope
    5. Ruff (bird)
    6. Snipe
    7. Tringa
    8. Turnstone
  13. Skua
  14. Stilt
    1. Avocet
  15. Stone-curlew

Columbimorphae

This section contains 19 articles.

  1. Columbidae (Level 4)
    1. Barbary dove
    2. Common wood pigeon
    3. Crowned pigeon
    4. Dodo (Level 4)
    5. Eared dove
    6. Eurasian collared dove
    7. Feral pigeon
    8. Fruit dove
    9. Gallicolumba
    10. Laughing dove
    11. Mourning dove
    12. Nicobar pigeon
    13. Passenger pigeon (Level 4)
    14. Rock dove (Level 4)
    15. Spotted dove
    16. Zebra dove
  2. Mesite
  3. Sandgrouse

Coraciiformes

This section contains 13 articles.

  1. Bee-eater
  2. Kingfisher
    1. River kingfisher (Level 4)
    2. Tree kingfisher
      1. Kookaburra
    3. Water kingfisher
  3. Ground roller
  4. Hornbill (Level 4)
    1. Oriental pied hornbill
    2. Ground hornbill
  5. Hoopoe (Level 4)
  6. Motmot
  7. Tody

Cuculiformes and relatives

This section contains 9 articles.

  1. Cuckoo (Level 4)
    1. Ani (bird)
    2. Common cuckoo
    3. Coua
    4. Coucal
    5. Clamator
    6. Koel
    7. Roadrunner
  2. Turaco (Level 4)

Galliformes

This section contains 31 articles.

  1. Galliformes (Level 4)
  2. Chachalaca
  3. Curassow
  4. Francolin
  5. Grey junglefowl
  6. Grouse (Level 4)
  7. Guan (bird)
  8. Guineafowl (Level 4)
  9. Monal
  10. Megapode
  11. Partridge
  12. Peafowl (Level 4)
  13. Phasianidae
  14. Red junglefowl
    1. Chicken (Level 3)
  15. Tragopan
  16. Turkey (bird)
    1. Domestic turkey (Level 4)
    2. Ocellated turkey
    3. Wild turkey
  17. Pheasant
  18. Blue eared pheasant
  19. Common pheasant (Level 4)
  20. Golden pheasant
  21. Green pheasant
  22. Lady Amherst's pheasant
  23. Domesticated quail
  24. New World quail
  25. Old World quail
    1. Common quail (Level 4)
    2. King quail

Gruiformes

This section contains 13 articles.

  1. Gruiformes (Level 4)
  2. Crane (bird) (Level 4)
    1. Antigone (bird)
    2. Grey crowned crane
    3. Demoiselle crane
    4. Siberian crane
  3. Limpkin
  4. Psophia
  5. Rail (bird) (Level 4)
    1. Coot
    2. Moorhen
    3. Swamphen
      1. Takahē

Palaeognathae

This section contains 9 articles.

  1. Palaeognathae (Level 4)
  2. Cassowary (Level 4)
  3. Elephant bird
  4. Emu (Level 4)
  5. Kiwi (bird) (Level 4)
  6. Moa (Level 4)
  7. Common ostrich (Level 4)
  8. Rhea (bird) (Level 4)
  9. Tinamou (Level 4)

Passerines

This section contains 85 articles.

Passerines: General

This section contains 2 articles.

  1. Passerine (Level 4)
  2. Songbird (Level 4)

Corvoidea

This section contains 16 articles.

  1. Bird-of-paradise (Level 4)
  2. Bowerbird
  3. Corvidae (Level 4)
    1. Chough
    2. Corvus (Level 4)
      1. American crow
      2. Common raven (Level 4)
      3. Hooded crow
      4. House crow
      5. Rook (bird)
    3. Eurasian magpie (Level 4)
    4. Jay
    5. Western jackdaw
  4. Honeyeater (Level 4)
  5. Lyrebird (Level 4)
  6. Shrike (Level 4)

Passerida

This section contains 61 articles.

  1. Accentor
  2. Atlantic canary
    1. Domestic canary
  3. Australian magpie
  4. Bulbul (Level 4)
  5. Cardinalidae (Level 4)
  6. Crossbill
  7. Dipper
  8. Drongo
  9. Emberiza
  10. Estrildidae
    1. Java sparrow
    2. Gouldian finch
  11. Finch (Level 4)
  12. Gnatcatcher
  13. Hawaiian honeycreeper
  14. Icterid (Level 4)
  15. Kinglet
  16. Lark (Level 4)
  17. Locustellidae
  18. Manakin
  19. Mockingbird (Level 4)
    1. Northern mockingbird
  20. Motacillidae
    1. Longclaw
    2. Pipit
    3. Wagtail
  21. New World warbler (Level 4)
  22. Nuthatch
  23. Old World flycatcher (Level 4)
    1. Chat (bird)
    2. European robin (Level 4)
    3. Common nightingale (Level 4)
  24. Old World oriole
  25. Old World sparrow (Level 4)
    1. House sparrow (Level 4)
  26. Oxpecker
  27. Penduline tit
  28. Old World warbler
  29. Ploceidae (Level 4)
    1. Red-billed quelea
  30. Starling (Level 4)
    1. Myna
      1. Common hill myna
      2. Common myna (Level 4)
    2. Common starling (Level 4)
  31. Sunbird (Level 4)
  32. Swallow (Level 4)
    1. Barn swallow
    2. Delichon
  33. Tanager
    1. Darwin's finches
  34. Tit (bird) (Level 4)
  35. Thrush (bird) (Level 4)
    1. American robin (Level 4)
    2. Common blackbird
  36. Vireo
  37. Wallcreeper
  38. Waxwing
  39. White-eye
  40. Wren (Level 4)

Tyranni

This section contains 6 articles.

  1. Tyranni
  2. Antbird (Level 4)
  3. Cotinga
    1. Cock-of-the-rock
  4. Ovenbird (family) (Level 4)
  5. Tyrant flycatcher (Level 4)

Pelecanimorphae

This section contains 22 articles.

  1. Cormorant (Level 4)
    1. European shag
  2. Darter (Level 4)
  3. Frigatebird (Level 4)
  4. Hamerkop
  5. Heron (Level 4)
    1. Bittern
    2. Cattle egret
    3. Little egret
    4. Night heron
  6. Ibis (Level 4)
    1. African sacred ibis
  7. Shoebill (Level 4)
  8. Spoonbill
  9. Pelican (Level 4)
  10. Stork (Level 4)
    1. Black stork
    2. Marabou stork
    3. White stork
  11. Sulidae (Level 4)
    1. Booby
    2. Gannet

Piciformes

This section contains 9 articles.

  1. Piciformes
  2. Lybiidae
  3. Megalaimidae
  4. Coraciidae
  5. Honeyguide (Level 4)
  6. Jacamar
  7. New World barbet
  8. Toucan (Level 4)
  9. Woodpecker (Level 4)

Procellariiformes

This section contains 6 articles.

  1. Procellariiformes (Level 4)
  2. Albatross (Level 4)
  3. Austral storm petrel
  4. Northern storm petrel
  5. Procellariidae
    1. Giant petrel

Psittaciformes

This section contains 17 articles.

  1. Parrot (Level 4)
  2. Cockatoo (Level 4)
    1. Cockatiel
    2. Gang-gang cockatoo
  3. New Zealand parrot
    1. Kākāpō
  4. True parrot
    1. Amazon parrot
    2. Budgerigar (Level 4)
    3. Grey parrot
    4. Loriini
    5. Lovebird
    6. Macaw
      1. Ara (bird) (Level 4)
    7. Parakeet
    8. Rainbow lorikeet
    9. Rosella

Sphenisciformes

This section contains 5 articles.

  1. Penguin (Level 4)
    1. African penguin
    2. Emperor penguin
    3. Little penguin
    4. Crested penguin

Strigiformes

This section contains 8 articles.

  1. Owl (Level 4)
  2. Strigidae
    1. Eurasian eagle-owl (Level 4)
    2. Little owl
    3. Scops owl
    4. Snowy owl
    5. Strix (bird)
  3. Barn owl (Level 4)

Trogoniformes

This section contains 2 articles.

  1. Trogon (Level 4)
  2. Resplendent quetzal (Level 4)

Prehistoric birds

This section contains 20 articles.

  1. Archaeopteryx (Level 4)
  2. Asteriornis
  3. Balaur bondoc
  4. Confuciusornis
  5. Dromornis
  6. Enantiornithes
  7. Gastornis
  8. Hesperornis
  9. Ichthyornis
  10. Inkayacu
  11. Pelagornithidae
    1. Pelagornis
  12. Phorusrhacidae
    1. Kelenken
    2. Phorusrhacos
    3. Titanis
  13. Plotopteridae
  14. Presbyornis
  15. Teratornithidae
    1. Argentavis

Reptiles

This section contains 297 articles.

Reptiles: General

This section contains 4 articles.

  1. Reptile (Level 3)
  2. Sauropsida
  3. Sauria
  4. Archosauromorpha

Crocodilia

This section contains 15 articles.

  1. Crocodilia (Level 4)
  2. Alligator (Level 4)
    1. American alligator
    2. Chinese alligator
  3. Caiman (Level 4)
    1. Black caiman
    2. Cuvier's dwarf caiman
  4. Crocodile (Level 4)
    1. Dwarf crocodile
    2. Freshwater crocodile
    3. Mugger crocodile
    4. Nile crocodile
    5. Saltwater crocodile
  5. Gharial
  6. False gharial

Lizards and other Squamata

This section contains 85 articles.

  1. Squamata
  2. Amphisbaenia
  3. Dibamidae
  4. Lizard (Level 4)
  5. Cordylidae
  6. Gecko (Level 4)
    1. Common house gecko
    2. Eublepharis
    3. Mediterranean house gecko
    4. Tokay gecko
    5. Uroplatinae
  7. Gila monster (Level 4)
  8. Lacertidae
    1. Lacerta (genus)
    2. Viviparous lizard
  9. Legless lizard
    1. Anguinae
  10. Monitor lizard
    1. Asian water monitor
    2. Bengal monitor
    3. Komodo dragon (Level 4)
    4. Nile monitor
    5. Perentie
  11. Skink (Level 4)
    1. Blue-tongued skink
  12. Teiidae
    1. New Mexico whiptail

Iguania

This section contains 18 articles.

  1. Agamidae
    1. Chinese water dragon
    2. Frilled lizard
    3. Draco (lizard)
    4. Hydrosaurus
    5. Oriental garden lizard
    6. Pogona
    7. Thorny devil
    8. Uromastyx
  2. Chameleon (Level 4)
    1. Jackson's chameleon
  3. Basiliscus (lizard)
  4. Common collared lizard
  5. Dactyloidae
  6. Iguanidae
    1. Green iguana (Level 4)
    2. Marine iguana
  7. Horned lizard (Level 4)

Snakes

This section contains 40 articles.

  1. Snake (Level 4)
  2. Boidae (Level 4)
    1. Anaconda
    2. Boa constrictor
  3. Colubridae
    1. Ahaetulla
    2. Bungarus
    3. Chrysopelea
    4. Corn snake
    5. Garter snake (Level 4)
    6. Grass snake
    7. Kingsnake
  4. Elapidae
    1. Cobra
      1. King cobra
      2. Naja (Level 4)
    2. Common death adder
    3. Coral snake (Level 4)
    4. Mamba (Level 4)
      1. Black mamba
      2. Jameson's mamba
    5. Red-bellied black snake
    6. Sea snake (Level 4)
      1. Sea krait
        1. Yellow-lipped sea krait
      2. Yellow-bellied sea snake
    7. Taipan
      1. Inland taipan
  5. Pythonidae
    1. Python (genus)
      1. Ball python
      2. Reticulated python
  6. Scolecophidia
  7. Viper
    1. Pit viper
      1. Agkistrodon piscivorus (Level 4)
      2. Eastern copperhead (Level 4)
    2. Rattlesnake (Level 4)
    3. Adder (Level 4)
  8. Xenopeltis

Rhynchocephalia

This section contains 3 articles.

  1. Rhynchocephalia
    1. Pleurosauridae
    2. Tuatara (Level 4)

Turtles

This section contains 20 articles.

  1. Turtle (Level 4)
  2. Alligator snapping turtle (Level 4)
  3. Box turtle (Level 4)
  4. Chelodina
  5. Common snapping turtle (Level 4)
  6. Diamondback terrapin
  7. Painted turtle (Level 4)
  8. Red-eared slider (Level 4)
  9. Sea turtle (Level 4)
    1. Green sea turtle
    2. Leatherback sea turtle
    3. Loggerhead sea turtle
    4. Hawksbill sea turtle
  10. Tortoise (Level 4)
    1. Aldabra giant tortoise
    2. Galápagos tortoise (Level 4)
    3. African spurred tortoise
    4. Testudo (genus)
  11. Trionychidae
  12. Wood turtle

Dinosaurs

This section contains 88 articles.

  1. Dinosaur (Level 3)
  2. Feathered dinosaur
  3. Eoraptor
  4. Herrerasaurus
  5. Saurischia

Ornitischians

This section contains 33 articles.

  1. Ornithischia
  2. Heterodontosauridae
    1. Heterodontosaurus
  3. Marginocephalia
    1. Pachycephalosauria
      1. Pachycephalosaurus
      2. Stegoceras
    2. Ceratopsia
      1. Pachyrhinosaurus
      2. Protoceratops
      3. Psittacosaurus
      4. Styracosaurus
      5. Triceratops (Level 4)
      6. Yinlong
  4. Ornithopoda
    1. Hypsilophodon
    2. Iguanodon (Level 4)
    3. Leaellynasaura
    4. Hadrosauridae
      1. Corythosaurus
      2. Edmontosaurus
      3. Lambeosaurus
      4. Parasaurolophus
  5. Thyreophora
    1. Ankylosauria
      1. Ankylosaurus
      2. Euoplocephalus
      3. Nodosauridae
    2. Scelidosaurus
    3. Stegosauria
      1. Kentrosaurus
      2. Stegosaurus (Level 4)
  6. Thescelosaurus

Sauropods

This section contains 13 articles.

  1. Plateosaurus
  2. Sauropoda
    1. Amargasaurus
    2. Apatosaurus (Level 4)
    3. Brachiosaurus
    4. Brontosaurus
    5. Camarasaurus
    6. Diplodocus (Level 4)
    7. Europasaurus
    8. Mamenchisauridae
    9. Titanosauria
      1. Argentinosaurus
      2. Saltasauridae

Theropods

This section contains 37 articles.

  1. Theropoda
  2. Carnosauria
    1. Abelisauridae
      1. Carnotaurus
    2. Allosaurus (Level 4)
    3. Ceratosaurus
    4. Dilophosaurus
    5. Giganotosaurus
    6. Masiakasaurus
    7. Megalosaurus
    8. Spinosauridae
      1. Baryonyx
      2. Spinosaurus
  3. Coelophysis
  4. Coelurosauria
    1. Alvarezsauridae
    2. Anchiornis
    3. Caenagnathidae
    4. Compsognathus
    5. Dromaeosauridae
      1. Deinonychus
      2. Halszkaraptor
      3. Incisivosaurus
      4. Microraptor
      5. Unenlagiinae
      6. Utahraptor
      7. Velociraptor (Level 4)
    6. Ornithomimosauria
      1. Deinocheirus
      2. Ornithomimus
    7. Oviraptor
    8. Scansoriopterygidae
    9. Therizinosaurus
    10. Troodontidae
    11. Tyrannosauroidea
      1. Tyrannosaurus (Level 4)
      2. Yutyrannus

Pterosaurs

This section contains 15 articles.

  1. Pterosaur (Level 4)
  2. Anurognathidae
  3. Azhdarchidae
    1. Hatzegopteryx
    2. Quetzalcoatlus
  4. Dimorphodon
  5. Dsungaripterus
  6. Peteinosaurus
  7. Pteranodon
  8. Pterodactylus
  9. Pterodaustro
  10. Rhamphorhynchus
  11. Ornithocheirus
  12. Tapejaridae
    1. Thalassodromeus

Other prehistoric archosaurs

This section contains 23 articles.

  1. Aetosaur
  2. Euparkeria
  3. Lagerpetidae
  4. Metriorhynchidae
  5. Phytosaur
  6. Poposauroidea
    1. Arizonasaurus
    2. Effigia
  7. Postosuchus
  8. Proterosuchus
  9. Scleromochlus
  10. Silesauridae
  11. Teleosauridae

Prehistoric crocodiles

This section contains 10 articles.

  1. Boverisuchus
  2. Deinosuchus
  3. Notosuchia
    1. Baurusuchidae
    2. Kaprosuchus
    3. Simosuchus
  4. Mekosuchus
  5. Sarcosuchus
  6. Stomatosuchidae
  7. Voay

Other prehistoric reptiles

This section contains 44 articles.

  1. Drepanosaur
  2. Youngina
  3. Hylonomus
  4. Longisquama
  5. Rhynchosaur
  6. Sharovipteryx
  7. Shringasaurus
  8. Tanystropheus

Parareptilia

This section contains 3 articles.

  1. Parareptilia
    1. Pareiasauria
      1. Scutosaurus

Prehistoric squamates

This section contains 8 articles.

  1. Madtsoiidae
  2. Megalania
  3. Mosasaur
    1. Dallasaurus
    2. Mosasaurus
    3. Tylosaurus
  4. Najash
  5. Titanoboa

Choristoderes

This section contains 2 articles.

  1. Choristodera
    1. Champsosaurus

Prehistoric turtles

This section contains 4 articles.

  1. Archelon
  2. Meiolania
  3. Proganochelys
  4. Stupendemys

Prehistoric marine reptiles

This section contains 19 articles.

  1. Ichthyosauria
    1. Ichthyosaurus
    2. Ophthalmosaurus
    3. Platypterygius
    4. Shonisaurus
    5. Temnodontosaurus
  2. Mesosaurus
  3. Nothosaurus
  4. Placodontia
  5. Plesiosaur (Level 4)
    1. Plesiosauroidea
      1. Cryptoclidus
      2. Elasmosaurus
      3. Polycotylidae
      4. Plesiosaurus
    2. Pliosauroidea
      1. Kronosaurus
      2. Liopleurodon
  6. Thalattosauria

Proto-mammals

This section contains 18 articles.

  1. Synapsida (Level 4)
    1. Cotylorhynchus
  2. Pelycosaur
    1. Dimetrodon (Level 4)
    2. Edaphosaurus
  3. Therapsida
    1. Burnetia
    2. Cynodontia
      1. Thrinaxodon
    3. Dicynodontia
      1. Lystrosaurus
      2. Placerias
    4. Dinocephalia
      1. Moschops
    5. Gorgonopsia
      1. Gorgonops
      2. Inostrancevia
    6. Therocephalia

Reptiliomorphs

This section contains 3 articles.

  1. Reptiliomorpha
    1. Diadectes
    2. Seymouria

Amphibians

This section contains 55 articles.

  1. Amphibian (Level 3)
  2. Caecilian (Level 4)

Frogs and toads

This section contains 28 articles.

  1. Frog (Level 4)
  2. African bullfrog
  3. Alytidae
    1. Common midwife toad
  4. Banded bullfrog
  5. Ceratophryidae
  6. Darwin's frog
  7. European spadefoot toad
  8. Fire-bellied toad
  9. Glass frog
  10. Goliath frog
  11. Hylidae (Level 4)
    1. Agalychnis
  12. Leptodactylidae (Level 4)
  13. Mantella
  14. Poison dart frog
  15. Tailed frog
  16. Toad
    1. True toad (Level 4)
      1. Cane toad
      2. Common toad
      3. Duttaphrynus melanostictus
  17. True frog (Level 4)
    1. American bullfrog (Level 4)
    2. Rana (genus)
    3. Wood frog
  18. Tree frog
  19. Xenopus

Salamanders and newts

This section contains 15 articles.

  1. Salamander (Level 4)
  2. Axolotl
  3. Asiatic salamander
  4. Giant salamander
    1. Chinese giant salamander
    2. Japanese giant salamander
  5. Mole salamander
    1. Fire salamander
  6. Necturus
  7. Olm
  8. Plethodontidae
  9. Newt (Level 4)
    1. Eastern newt
    2. Rough-skinned newt
  10. Sirenidae

Prehistoric amphibians

This section contains 10 articles.

  1. Acanthostega
  2. Ichthyostega
  3. Lepospondyli
    1. Diplocaulus
    2. Microsauria
  4. Temnospondyli
    1. Koolasuchus
    2. Stereospondyli
  5. Tiktaalik
  6. Triadobatrachus

Fishes

This section contains 306 articles.

Fishes: General

This section contains 8 articles.

  1. Fish (Level 3)
  2. Chondrichthyes (Level 4)
  3. Osteichthyes (Level 4)
    1. Sarcopterygii (Level 4)
      1. Coelacanth (Level 4)
        1. Indonesian coelacanth
        2. West Indian Ocean coelacanth
      2. Lungfish (Level 4)

Fishes by habitat

This section contains 9 articles.

  1. Coastal fish
  2. Coldwater fish
  3. Coral reef fish (Level 4)
  4. Deep-sea fish (Level 4)
  5. Demersal fish
  6. Freshwater fish
  7. Pelagic fish
  8. Saltwater fish
  9. Tropical fish

Chondrichthyes

This section contains 47 articles.

Batoidea

This section contains 13 articles.

  1. Batomorphi (Level 4)
  2. Eagle ray
    1. Manta ray (Level 4)
    2. Cownose ray
  3. Electric ray (Level 4)
  4. Guitarfish
    1. Fiddler ray
    2. Sawfish (Level 4)
    3. Wedgefish
  5. Skate (fish) (Level 4)
  6. Stingray (Level 4)
    1. Whiptail stingray
    2. Potamotrygonidae

Chimaeriformes

This section contains 4 articles.

  1. Callorhinchus
  2. Chimaera (Level 4)
  3. Rabbit fish
  4. Spotted ratfish

Sharks

This section contains 30 articles.

  1. Shark (Level 4)
  2. Angelshark
  3. Bullhead shark
  4. Carpet shark
    1. Nurse shark (Level 4)
    2. Whale shark (Level 4)
    3. Wobbegong
    4. Zebra shark
  5. Scyliorhinidae
  6. Cookiecutter shark
  7. Cow shark
  8. Frilled shark
  9. Lamniformes
    1. Basking shark
    2. Goblin shark
    3. Great white shark (Level 4)
    4. Longfin mako shark
    5. Megamouth shark
    6. Sand shark
    7. Sand tiger shark
    8. Thresher shark
  10. Greenland shark
  11. Hammerhead shark (Level 4)
  12. Houndshark
  13. Requiem shark
    1. Blue shark
    2. Bull shark
    3. River shark
    4. Tiger shark (Level 4)
  14. Sawshark

Actinopterygii

This section contains 227 articles.

  1. Actinopterygii (Level 4)
  2. Teleost

Acipenseriformes

This section contains 3 articles.

  1. Paddlefish
  2. Sturgeon (Level 4)
    1. Beluga (sturgeon)

Anguilliformes

This section contains 9 articles.

  1. Eel (Level 4)
    1. European eel
    2. Snipe eel
  2. European conger
  3. Heterocongrinae
  4. Moray eel
    1. Ribbon eel
  5. Pelican eel
  6. Tarpon

Aulopiformes

This section contains 3 articles.

  1. Bathypterois grallator
  2. Lancetfish
  3. Synodontidae

Characiformes

This section contains 8 articles.

  1. Characiformes (Level 4)
  2. Characidae
  3. Headstander
  4. Tetra
    1. Neon tetra
  5. Pencil fish
  6. Piranha (Level 4)
    1. Tambaqui

Clupeiformes

This section contains 10 articles.

  1. Clupeiformes
  2. Anchovy (Level 4)
  3. Clupeidae
    1. Alosa
    2. Herring (Level 4)
      1. Atlantic herring
    3. Ilish (Level 4)
    4. Menhaden
    5. Sardine (Level 4)
    6. Sprat (Level 4)

Cypriniformes

This section contains 15 articles.

  1. Cypriniformes (Level 4)
  2. Loach
    1. Misgurnus fossilis
  3. Cyprinidae
    1. Carassius
    2. Carp (Level 4)
    3. Common bream
    4. Common carp
    5. Danionin
    6. Goldfish (Level 4)
    7. Grass carp
    8. Koi (Level 4)
    9. Minnow
    10. Silver carp
    11. Tench

Esociformes

This section contains 4 articles.

  1. Esociformes
  2. American pickerel
  3. Muskellunge
  4. Northern pike (Level 4)

Gonorynchiformes

This section contains 2 articles.

  1. Gonorynchiformes
  2. Milkfish (Level 4)

Gymnotiformes

This section contains 5 articles.

  1. Gymnotiformes
  2. Banded knifefish
  3. Black ghost knifefish
  4. Electric eel (Level 4)
  5. Glass knifefish

Holosteans

This section contains 2 articles.

  1. Gar
  2. Bowfin

Myctophiformes

This section contains 2 articles.

  1. Myctophiformes
  2. Lanternfish

Osmeriformes and relatives

This section contains 3 articles.

  1. Barreleye
  2. Galaxiidae (Level 4)
  3. Smelt (fish) (Level 4)

Osteoglossiformes

This section contains 5 articles.

  1. Osteoglossiformes
  2. Arapaima (Level 4)
  3. Freshwater butterflyfish
  4. Notopteridae
  5. Mormyrinae

Acanthomorpha

This section contains 137 articles.

  1. Perciformes (Level 4)
  2. Acanthuridae
    1. Paracanthurus
  3. Clownfish
  4. Antarctic fishes
    1. Antarctic toothfish
    2. Channichthyidae
  5. Archerfish
  6. Barracuda (Level 4)
  7. Batrachoididae
  8. Beloniformes
    1. Flying fish (Level 4)
    2. Halfbeak
    3. Needlefish
    4. Pacific saury
    5. Ricefish
    6. Wrestling halfbeak
  9. Billfish
    1. Marlin (Level 4)
    2. Sailfish
    3. Swordfish (Level 4)
  10. Black swallower
  11. Blenniiformes
    1. Butterflyfish
  12. Caranx
  13. Cichlid (Level 4)
    1. Pterophyllum
    2. Tilapia (Level 4)
  14. Cirrhitidae
  15. Cyprinodontiformes (Level 4)
    1. Four-eyed fish
    2. Guppy (Level 4)
    3. Killifish
    4. Pupfish
  16. Damselfish
  17. Dragonet
  18. Gadiformes
    1. Alaska pollock (Level 4)
    2. Burbot
    3. Cod (Level 4)
      1. Atlantic cod
    4. Grenadiers (fish)
    5. Haddock (Level 4)
    6. Hake
    7. Merlangius
    8. Pollock
  19. Gasterosteoidei
    1. Stickleback (Level 4)
      1. Three-spined stickleback
  20. Goby (Level 4)
    1. Elacatinus
    2. Gobiinae
    3. Mudskipper
  21. Gourami
    1. Siamese fighting fish (Level 4)
  22. John Dory
  23. Lampriformes
    1. Oarfish (Level 4)
      1. Giant oarfish
    2. Opah
    3. Ribbonfish
  24. Anglerfish (Level 4)
    1. Black seadevil
    2. Fanfin
    3. Frogfish
    4. Handfish
    5. Sea toad
    6. Footballfish
    7. Goosefish
  25. Mahi-mahi (Level 4)
  26. Moorish idol
  27. Mullet (fish) (Level 4)
    1. Flathead grey mullet
  28. Murray cod
  29. Nile perch
  30. Ophidiiformes (Level 4)
    1. Cusk-eel
    2. Pearlfish
    3. Viviparous brotula
  31. Parrotfish
  32. Perch (Level 4)
    1. European perch
  33. Pumpkinseed
  34. Pomacanthidae
    1. Emperor angelfish
  35. Platax
  36. Flatfish (Level 4)
    1. Flounder (Level 4)
    2. Halibut (Level 4)
    3. Plaice (Level 4)
    4. Sole (fish)
    5. Turbot (Level 4)
  37. Pomfret
  38. Priacanthidae
  39. Prowfish
  40. Rabbitfish
  41. Remora (Level 4)
  42. Red mullet
  43. Scombridae
    1. Bonito
    2. Mackerel (Level 4)
    3. Spanish mackerel
    4. Tuna (Level 4)
      1. Pacific bluefin tuna
      2. Skipjack tuna
  44. Scorpaeniformes (Level 4)
    1. Flathead (fish)
    2. Lionfish
    3. Sebastinae
    4. Scorpaenidae
    5. Triglidae
  45. Serranidae (Level 4)
    1. Anthias anthias
    2. European seabass (Level 4)
    3. Grouper (Level 4)
  46. Sparidae
  47. Syngnathiformes
    1. Common seadragon
    2. Leafy seadragon
    3. Pipefish
    4. Seahorse (Level 4)
    5. Shrimpfish
    6. Florida Manetfish
  48. Tetraodontiformes
    1. Filefish
    2. Ocean sunfish (Level 4)
    3. Ostraciidae
    4. Porcupinefish
    5. Tetraodontidae (Level 4)
      1. Takifugu
    6. Triggerfish
  49. Trachichthyiformes
    1. Anomalopidae
    2. Slimehead
  50. Tilefish
  51. Weever
  52. Wrasse (Level 4)
    1. Humphead wrasse

Polypteriformes

This section contains 2 articles.

  1. Bichir (Level 4)
  2. Reedfish

Salmoniformes

This section contains 6 articles.

  1. Salmonidae (Level 4)
  2. Coregonus
  3. Oncorhynchus
  4. Salmon (Level 4)
    1. Atlantic salmon
  5. Trout (Level 4)

Siluriformes

This section contains 5 articles.

  1. Catfish (Level 4)
    1. Basa (fish)
    2. Black bullhead
    3. Wels catfish
  2. Loricariidae (Level 4)

Stomiiformes

This section contains 4 articles.

  1. Stomiiformes
  2. Gonostomatidae
  3. Marine hatchetfish
  4. Viperfish

Prehistoric fish

This section contains 15 articles.

  1. Placoderm (Level 4)
    1. Bothriolepis
    2. Dunkleosteus

Prehistoric chondrichthyans

This section contains 6 articles.

  1. Acanthodii (Level 4)
  2. Cretoxyrhina
  3. Helicoprion
  4. Hybodontiformes
  5. Megalodon
  6. Stethacanthus

Prehistoric osteichthyans

This section contains 6 articles.

  1. Eusthenopteron
  2. Hyneria
  3. Leedsichthys
  4. Mawsonia (fish)
  5. Osteolepis
  6. Xiphactinus

Agnatha

This section contains 17 articles.

  1. Agnatha (Level 4)
  2. Cyclostomi
  3. Hagfish (Level 4)
  4. Lamprey (Level 4)
    1. Pouched lamprey
    2. Sea lamprey

Prehistoric agnathae and early chordates

This section contains 11 articles.

  1. Ostracoderm (Level 4)
    1. Anaspida
    2. Arandaspis
    3. Cephalaspis
    4. Pteraspis
  2. Galeaspida
  3. Conodont
  4. Haikouichthys
  5. Pikaia
  6. Thelodonti
  7. Vetulicolia

Arthropods

This section contains 377 articles.

  1. Arthropod (Level 3)

Crustaceans

This section contains 84 articles.

  1. Crustacean (Level 3)
    1. Argulidae
    2. Barnacle
      1. Pollicipes pollicipes
      2. Lepas anatifera
    3. Branchiopoda
      1. Brine shrimp
        1. Sea-Monkeys
      2. Diplostraca
      3. Notostraca
    4. Copepod
    5. Ostracod (Level 4)

Malacostraca

This section contains 11 articles.

  1. Malacostraca (Level 4)
  2. Amphipoda
  3. Cumacea
  4. Isopoda
    1. Giant isopod
    2. Ligia
    3. Woodlouse (Level 4)
  5. Krill (Level 4)
  6. Leptostraca
  7. Mantis shrimp
    1. Squilla mantis

Decapoda

This section contains 61 articles.

  1. Decapod (Level 4)
    1. Axiidea
    2. Stenopodidea

Crabs and hermit crabs

This section contains 32 articles.

  1. Anomura
    1. Coconut crab
    2. Hermit crab
    3. Hippoidea
    4. King crab
      1. Red king crab
    5. Porcelain crab
    6. Squat lobster
      1. Kiwa hirsuta
  2. Crab (Level 4)
    1. Cancer pagurus
    2. Christmas Island red crab
    3. Dromiidae
    4. Fiddler crab
    5. Freshwater crab
    6. Ghost crab
    7. Grapsus grapsus
    8. Horsehair crab
    9. Majoidea
      1. Chionoecetes
      2. Japanese spider crab
      3. Maja squinado
    10. Mangrove crab
    11. Portunidae
      1. Callinectes sapidus
      2. Carcinus maenas
      3. Scylla serrata
      4. Velvet crab
    12. Ranina ranina
    13. Terrestrial crab
    14. Trapeziidae
    15. Xanthidae

Crayfishes and lobsters

This section contains 13 articles.

  1. Crayfish (Level 4)
    1. Astacus astacus
    2. Procambarus alleni
    3. Cherax pulcher
  2. Lobster (Level 4)
    1. American lobster
    2. Furry lobster
    3. Homarus gammarus
    4. Nephrops norvegicus
    5. Metanephrops challengeri
    6. Reef lobster
    7. Slipper lobster
    8. Spiny lobster

Shrimps and prawns

This section contains 13 articles.

  1. Shrimp (Level 4)
    1. Alpheidae
    2. Caridina
    3. Cleaner shrimp
    4. Crangon crangon
    5. Macrobrachium rosenbergii
    6. Palaemon serratus
    7. Pandalus borealis
    8. Rhynchocinetidae
  2. Prawn
    1. Penaeus monodon
    2. Whiteleg shrimp
    3. Indian prawn

Arachnids

This section contains 52 articles.

  1. Amblypygi
  2. Arachnid (Level 4)
  3. Mite (Level 4)
    1. Parasitiformes
    2. Acariformes
    3. Flour mite
    4. Trombiculidae
  4. Opiliones
  5. Palpigradi
  6. Pseudoscorpion (Level 4)
  7. Ricinulei
  8. Schizomida
  9. Solifugae
  10. Tick (Level 4)
  11. Uropygi

Scorpions

This section contains 6 articles.

  1. Scorpion (Level 4)
  2. Arizona bark scorpion
  3. Deathstalker
  4. Emperor scorpion
  5. Fattail scorpion
  6. Tityus serrulatus

Spiders

This section contains 29 articles.

  1. Spider (Level 4)
  2. Agelenidae
  3. Australian funnel-web spider
  4. Brown recluse spider
  5. Diving bell spider
  6. Dolomedes
  7. Huntsman spider
  8. Jumping spider
    1. Bagheera kiplingi
    2. Portia (spider)
      1. Portia labiata
  9. Latrodectus
    1. Redback spider
  10. Mesothelae
    1. Linyphiidae
      1. Kimura spider
  11. Orb-weaver spider
  12. Pholcidae
    1. Pholcus phalangioides
  13. Phoneutria
  14. Tarantula (Level 4)
    1. Aphonopelma chalcodes
    2. Brachypelma hamorii
    3. Goliath birdeater
    4. Poecilotheria metallica
  15. Tegenaria domestica
  16. Theridiidae
  17. Thomisidae
  18. Wolf spider

Prehistoric arachnids

This section contains 2 articles.

  1. Phalangiotarbida
  2. Trigonotarbida

Insects and other hexapods

This section contains 209 articles.

  1. Hexapoda (Level 4)

Non-insect hexapods

This section contains 3 articles.

  1. Diplura
  2. Protura
  3. Springtail (Level 4)

Insects: General

This section contains 39 articles.

  1. Insect (Level 3)
    1. Pterygota (Level 4)
  2. Archaeognatha
  3. Caddisfly
  4. Earwig (Level 4)
  5. Embioptera
  6. Flea (Level 4)
    1. Cat flea
    2. Dog flea
    3. Oriental rat flea
  7. Grylloblattidae
  8. Louse (Level 4)
    1. Body louse (Level 4)
    2. Crab louse
    3. Head louse
  9. Mantis (Level 4)
    1. Dead leaf mantis
    2. Empusidae
    3. Flower mantis
    4. Shield mantis
    5. Stick mantis
  10. Mantophasmatidae
  11. Mayfly
  12. Mecoptera
  13. Megaloptera
  14. Neuroptera
    1. Antlion
  15. Phasmatodea (Level 4)
    1. Common walkingstick
    2. Heteropteryx
    3. Phylliidae
    4. Timema
  16. Plecoptera
  17. Psocodea
  18. Psocoptera
  19. Snakefly
  20. Strepsiptera
  21. Thrips
  22. Zoraptera

Beetles (Coleoptera)

This section contains 26 articles.

  1. Beetle (Level 4)
    1. Pollen beetle
  2. Blister beetle
  3. Cardinal beetle
  4. Coccinellidae (Level 4)
    1. Coccinella septempunctata
  5. Dung beetle (Level 4)
  6. Firefly (Level 4)
  7. Flour beetle
  8. Ground beetle
  9. Leaf beetle
    1. Colorado potato beetle
  10. Longhorn beetle
  11. Rove beetle
    1. Nairobi fly
  12. Scarabaeidae
    1. Cockchafer
    2. Goliathus
    3. Hercules beetle
    4. Japanese rhinoceros beetle
    5. Stag beetle
  13. Water beetle
    1. Dytiscus
    2. Whirligig beetle
  14. Weevil (Level 4)
    1. Giraffe weevil

Cockroaches & Termites (Blattodea)

This section contains 9 articles.

  1. Blattodea
  2. Cockroach (Level 4)
    1. American cockroach
    2. German cockroach
    3. Madagascar hissing cockroach
  3. Termite (Level 4)
    1. Coptotermes gestroi
    2. Formosan subterranean termite
    3. Macrotermes bellicosus

Flies (Diptera)

This section contains 19 articles.

  1. Fly (Level 4)
  2. Drosophila melanogaster (Level 4)
  3. Black fly (Level 4)
  4. Botfly (Level 4)
  5. Crane fly (Level 4)
  6. Calliphoridae (Level 4)
  7. Cecidomyiidae
  8. Tabanidae (Level 4)
  9. Housefly (Level 4)
  10. Midge
  11. Mosquito (Level 4)
    1. Aedes aegypti
    2. Anopheles
    3. Culex
  12. Psychodidae
  13. Sandfly
  14. Tachinidae
  15. Tephritidae
  16. Tsetse fly (Level 4)

Hemiptera (true bugs)

This section contains 28 articles.

  1. Hemiptera (Level 4)
    1. Acanthosoma
  2. Aphid (Level 4)
  3. Aphrophoridae
  4. Bed bug (Level 4)
  5. Cicada (Level 4)
    1. Periodical cicadas
  6. Coreidae
  7. Gerridae
    1. Halobates
  8. Fulgoridae
  9. Heteroptera
  10. Leafhopper (Level 4)
  11. Lygaeidae
  12. Nepomorpha
    1. Belostomatidae
    2. Corixidae
    3. Notonectidae
    4. Ranatra
  13. Pentatomoidea
  14. Planthopper
  15. Pyrrhocoris apterus
  16. Reduviidae
  17. Saldidae
  18. Scale insect (Level 4)
  19. Treehopper
  20. Veliidae
  21. Whitefly (Level 4)

Hymenoptera

This section contains 36 articles.

  1. Hymenoptera (Level 4)
  2. Ant (Level 4)
    1. Argentine ant
    2. Army ant
    3. Carpenter ant (Level 4)
    4. Fire ant (Level 4)
    5. Formica rufa
    6. Harvester ant
    7. Honeypot ant
    8. Leafcutter ant
    9. Myrmecia (ant)
    10. Ochetellus glaber
    11. Pharaoh ant
    12. Tapinoma melanocephalum
    13. Tapinoma sessile
    14. Weaver ant
    15. Yellow crazy ant
  3. Bee (Level 4)
    1. Bumblebee (Level 4)
    2. Carpenter bee
    3. Cuckoo bee
    4. Stingless bee
    5. Honey bee
      1. Africanized bee (Level 4)
      2. European dark bee
      3. Western honey bee (Level 4)
  4. Sawfly
  5. Wasp (Level 4)
    1. Hornet (Level 4)
      1. Asian giant hornet
    2. Fig wasp
    3. Gall wasp
    4. Mud dauber
    5. Parasitoid wasp
    6. Tarantula hawk
    7. Yellowjacket

Lepidoptera

This section contains 26 articles.

  1. Lepidoptera (Level 4)
  2. Butterfly (Level 4)
    1. Swallowtail butterfly (Level 4)
      1. Birdwing
    2. Nymphalidae
      1. Monarch butterfly
      2. Morpho (genus)
      3. Vanessa cardui
    3. Pieris brassicae (Level 4)
  3. Caterpillar
  4. Bombyx mori (Level 4)
  5. Erebidae
  6. Fall armyworm
  7. Geometer moth (Level 4)
    1. Gonepteryx rhamni
  8. Luna moth
  9. Lymantria dispar dispar (Level 4)
  10. Moth (Level 4)
    1. Clothes moth
    2. Peppered moth
  11. Noctuidae
    1. Pachypasa
  12. Sphingidae
    1. Acherontia lachesis
    2. Hummingbird hawk-moth
  13. Tortricidae

Odonata

This section contains 7 articles.

  1. Odonata (Level 4)
  2. Damselfly (Level 4)
  3. Dragonfly (Level 4)
    1. Libellulidae
      1. Libellula
    2. Emperor dragonfly
    3. Southern hawker

Orthoptera

This section contains 12 articles.

  1. Orthoptera (Level 4)
  2. Cooloola (insect)
  3. Cricket (insect) (Level 4)
  4. Grasshopper (Level 4)
    1. Hump-winged grig
  5. Mole cricket (Level 4)
  6. Locust (Level 4)
  7. Tetrigidae
  8. Tettigoniidae (Level 4)
  9. Wētā
    1. Giant wētā
    2. Rhaphidophoridae

Zygentoma

This section contains 3 articles.

  1. Zygentoma
  2. Firebrat
  3. Silverfish

Myriapoda

This section contains 12 articles.

  1. Myriapoda (Level 4)
  2. Centipede (Level 4)
    1. Cryptopidae
    2. Scolopendridae
      1. Scolopendra gigantea
    3. Scutigera coleoptrata
  3. Millipede (Level 4)
    1. Archispirostreptus gigas
    2. Julida
    3. Pill millipede
  4. Pauropoda
  5. Symphyla

Chelicerata (except arachnids)

This section contains 4 articles.

  1. Chelicerata (Level 4)
  2. Sea spider
  3. Xiphosura (Level 4)
    1. Horseshoe crab

Fossil arthropods

This section contains 15 articles.

  1. Arthropleura
  2. Canadaspis
  3. Dinocaridida
    1. Anomalocaris
    2. Opabinia
    3. Tamisiocarididae
  4. Eurypterid (Level 4)
    1. Eurypterus
    2. Jaekelopterus
    3. Megarachne
  5. Leanchoilia
  6. Meganeura
  7. Sidneyia
  8. Thylacocephala
  9. Trilobite (Level 4)

Mollusks

This section contains 72 articles.

  1. Mollusca (Level 3)
  2. Aplacophora
  3. Chiton
  4. Halkieriid
  5. Monoplacophora
  6. Tusk shell
  7. Wiwaxia

Bivalvia

This section contains 17 articles.

  1. Bivalvia
  2. Clam (Level 4)
    1. Cockle (bivalve)
    2. Ensis
    3. Geoduck
    4. Giant clam
    5. Veneridae
    6. Zebra mussel
  3. Mussel (Level 4)
  4. Oyster (Level 4)
  5. Pinnidae
  6. Rudists
  7. Scallop (Level 4)
    1. Pecten maximus
  8. Shipworm
  9. Unionida
    1. Freshwater pearl mussel

Cephalopods

This section contains 19 articles.

  1. Cephalopod
  2. Ammonoidea
  3. Argonaut (animal)
  4. Belemnitida
  5. Cuttlefish
  6. Nautiloid
    1. Nautilus
  7. Octopus (Level 4)
    1. Amphioctopus marginatus
    2. Blue-ringed octopus
    3. Common octopus
    4. Giant Pacific octopus
    5. Umbrella octopus
  8. Orthoceras
  9. Squid (Level 4)
    1. Colossal squid
    2. Giant squid
    3. Vampire squid
  10. Spirula

Gastropods

This section contains 29 articles.

  1. Gastropoda
  2. Slug (Level 4)
    1. Banana slug
  3. Sea slug
    1. Aplysiida
    2. Clione limacina
    3. Glaucus atlanticus
    4. Nudibranch
    5. Spanish dancer
  4. Snail (Level 4)
  5. Freshwater snail
  6. Land snail
    1. Achatina
    2. Helicidae
      1. Cornu aspersum
      2. Helix pomatia
    3. Lissachatina fulica
  7. Sea snail
    1. Abalone
    2. Charonia
    3. Conch (Level 4)
    4. Cone snail
    5. Cowrie
    6. Limpet
      1. Muricidae
    7. Turrid
    8. Turritellidae
    9. Whelk
    10. Wentletrap

Cnidarians

This section contains 23 articles.

  1. Cnidaria (Level 4)
  2. Polyp (zoology)
  3. Anthozoa
    1. Coral (Level 4)
    2. Alcyonacea
    3. Brain coral
    4. Precious coral
    5. Sea anemone
    6. Sea pen
  4. Box jellyfish
    1. Chironex fleckeri
  5. Hydrozoa
    1. Hydra (genus)
    2. Portuguese man o' war
    3. Siphonophorae
      1. Praya dubia
    4. Turritopsis dohrnii
  6. Jellyfish (Level 4)
    1. Chrysaora fuscescens
    2. Scyphozoa
      1. Aurelia (cnidarian)
      2. Lion's mane jellyfish
  7. Myxozoa

Echinoderms

This section contains 15 articles.

  1. Echinoderm (Level 4)
  2. Crinoid
  3. Brittle star
    1. Basket star
  4. Sea cucumber (Level 4)
    1. Scotoplanes globosa
    2. Sea apple
  5. Sea urchin (Level 4)
    1. Sand dollar
    2. Strongylocentrotus purpuratus
  6. Starfish (Level 4)
    1. Crown-of-thorns starfish
    2. Culcita (echinoderm)
    3. Linckia laevigata
    4. Sunflower sea star

Porifera

This section contains 6 articles.

  1. Sponge (Level 4)
  2. Calcareous sponge
  3. Demosponge
    1. Spongia officinalis
  4. Hexactinellid
  5. Homosclerophorida

Invertebrata, others

This section contains 58 articles.

Chordata (except vertebrates)

This section contains 4 articles.

  1. Lancelet
  2. Tunicate
    1. Ascidiacea
    2. Salp

Ecdysozoa

This section contains 14 articles.

  1. Ecdysozoa
  2. Kinorhyncha
  3. Lobopodia
    1. Microdictyon
  4. Loricifera
  5. Nematode (Level 4)
    1. Ancylostoma
    2. Ascaris lumbricoides
    3. Caenorhabditis elegans (Level 4)
  6. Nematomorpha
  7. Onychophora
    1. Hallucigenia
  8. Priapulida
  9. Tardigrade (Level 4)

Spiralia

This section contains 34 articles.

  1. Chaetognatha
  2. Symbion
  3. Dicyemida
  4. Entoprocta
  5. Gnathostomulid
  6. Orthonectida

Lophotrochozoa

This section contains 18 articles.

  1. Lophotrochozoa
  2. Annelid (Level 4)
    1. Leech (Level 4)
    2. Polychaete (Level 4)
      1. Arenicola
      2. Nereididae
      3. Riftia
    3. Oligochaeta
      1. Earthworm (Level 4)
      2. Giant Gippsland earthworm
    4. Sipuncula
  3. Brachiopod
    1. Lingulata
  4. Bryozoa (Level 4)
  5. Nemertea
  6. Ottoia
  7. Phoronid
  8. Tubifex

Platyzoa

This section contains 10 articles.

  1. Flatworm (Level 4)
    1. Turbellaria
    2. Trematoda
    3. Cestoda (Level 4)
      1. Eucestoda
        1. Taenia solium
  2. Rotifer
  3. Acanthocephala
  4. Gastrotrich
  5. Limnognathia

Other

This section contains 6 articles.

  1. Ctenophora
  2. Dickinsonia
  3. Hemichordate
  4. Placozoa
    1. Trichoplax
  5. Xenacoelomorpha

Animal behavior

This section contains 7 articles.

Shelters and structures

This section contains 7 articles.

  1. Ant colony
  2. Beaver dam
  3. Beehive
  4. Burrow
  5. Nest
    1. Bird nest
  6. Spider web


Allikas: https://en.wikipedia.org/wiki/Wikipedia:Vital_articles/Level/5/Biology_and_health_sciences/Animals
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