The Black and Tan Terrier was a broad breed or type of terrier that was one of the earliest terrier breeds. Although it is now extinct, it is believed to be the ancestor of all modern Fell Terrier breeds and the Welsh Terrier, a breed recognised by The Kennel Club.

Working Fell Terriers (non-Kennel Club working terriers from the rocky Lakeland Fells^[1] region of the UK) have always been quite variable, but have always been coloured terriers (tan, black or black and tan), as opposed to the white-coated "foxing terriers" preferred in the south of England.

From the coloured rough-coated Fell Terriers of Cumberland, Westmorland and the Scottish Borders were developed several Kennel Club breeds, including the Lakeland Terrier, the Welsh Terrier, and the Border Terrier.

• List of dog breeds
• List of extinct dog breeds
• Tiny the Wonder, famous 19th century black and tan terrier.

• Butler, Francis (1877). Breeding, training, management, diseases & c. of dogs. Brooklyn: D.S. Holmes.
• Cummins, Bryan (2019). The terriers of England and Wales: their history and development. Victoria, BC: FriesenPress, Inc. ISBN 9781525551895.
• Hancock, David (1984). Old working dogs. Botley, Oxfordshire: Shire Publications Ltd. ISBN 0852636784.
• Hancock, David (2011). Sporting Terriers: Their Form, Their Function and Their Future. Ramsbury, Marlborough: The Crowood Press Ltd. ISBN 978-1-84797-303-0.
• Morris, Desmond (2001). Dogs: the ultimate dictionary of over 1,000 dog breeds. North Pomfret, VT: Trafalgar Square Publishing. ISBN 1-57076-219-8.
• Shaw, Vero (1881). The illustrated book of the dog. London, Paris & New York: Cassell & Compant Ltd.