The Sealyham Terrier (Welsh: Daeargi Sealyham) is a rare Welsh breed of small to medium-sized terrier that originated in Wales as a working dog. The Sealyham Terrier now is recognised by all of the major kennel clubs in the English-speaking world. During the early stages of its recognition, the breed was alternatively known as the Welsh Border Terrier, or the Cowley Terrier. They have a white double coat which requires regular brushing with a wire comb in order to prevent matting. Sealyhams are low to the ground, and in muddy weather their long coats can become quite dirty. Sealyham coats are groomed by hand stripping, in order to keep the coat from becoming too soft. However, if they are not shown, Sealyhams can be clipped and this is often the preferred grooming approach for pets. As with many terriers, Sealyhams have essentially non-shedding coats.