The Sealyham Terrier, also known as the Pembrokeshire Terrier and the Sealy Ham Terrier, is a smart and sassy little dog whose small size belies its strength and typical terrier temperament. Bred to hunt badger and other small game, it has a strong-willed, bold and active disposition. The breed was recognized by the American Kennel Club in 1911 as a member of the Terrier Group and had its American show debut in San Mateo, California, that same year.
The mature Sealyham Terrier should stand about 10½ inches at the withers and weigh about 20 to 25 pounds, with bitches being a bit lighter. The white coat of this breed requires regular care, including brushing, plucking and clipping. The tail is normally docked. The most important thing to the wellbeing of this breed is that it is allowed to accompany its owners wherever they go.