he Field Spaniel is a medium-sized dog breed of spaniel type. They were originally developed to be all-black show dogs in the late 19th and early 20th centuries and were unpopular for work as a hunting dog. However, during the mid-20th century they were redeveloped as a longer-legged dog that was more suitable to be used for field work. They are now considered to be a rare breed, and are registered as a Vulnerable Native Breed by The Kennel Club. Their fur is darker than other spaniels and they have no undercoat like most of the other field type spaniels.