Rat Terrier
The Rat Terrier is an American dog breed with a background as a farm dog and hunting companion. They share much ancestry with the small hunting dogs known as feists. Common throughout family farms in the 1920s and 1930s, they are now recognized by the United and American Kennel Clubs and are considered a rare breed.
Health
Due to regular outcrossings throughout the Rat Terrier's history, overall it is a very hardy breed. However, with its growth in popularity in recent years some issues are becoming more common. The Canine Health Information Center recommends that Rat Terriers be tested for patellar luxation, cardiac abnormalities, pancreatic issues, hip dysplasia, and Legg–Calvé–Perthes syndrome.History
The earliest-known record of a rat-catching dog is that of "Hatch", whose remains were recovered from the Mary Rose, the flagship of Henry VIII, sunk in 1545 and re-raised in 1982. Hatch is thought to have been a mongrel, and was brought on board to control the rat population.One source claims that during a competition in England, a single terrier killed 2,501 rats over a seven-hour period in a rat-infested barn - an average of one rat every ten seconds.