The Sealyham Terrier is one of many Terrier breeds. The Sealyham Terrier originates from Wales and was bred by crossing Basset Hounds, Bull Terriers, the Fox Terrier, the West Highland White Terrier, and the Dandie Dinmont Terrier.

The first Sealyham Terrier's club was created in 1908 and the breed was officially recognised in 1910. Sealyham Terriers are today found mainly in England and South Africa.

The Sealyham Terrier is an intelligent and charming dog, usually coloured white, possibly with badge. They grow up to 30cm with a weight of up to 9 kg. The Sealyham should be the embodiment of power and determination, ever keen and alert, of extraordinary substance, yet free from clumsiness.

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