The Sealyham Terrier is a small, sturdy dog with a distinctive white coat, often with markings on the ears and face. Known for its friendly and outgoing nature, it was originally bred for hunting small game. This terrier is agile, intelligent, and exhibits a keen sense of smell.

The Sealyham Terrier is a dog breed that originated in Wales, United Kingdom. It was specifically developed in the late 19th century by Captain John Edwardes at Sealyham House in Pembrokeshire.

As a domesticated breed, the Sealyham Terrier does not have a natural wild habitat. However, it was initially bred to work in the rugged terrain of the Welsh countryside, characterized by rolling hills, coastal plains, and a temperate maritime climate with cool summers and mild winters.

The Sealyham Terrier was originally bred for hunting small game such as otters, badgers, and foxes. Its ecological niche was as a working terrier, proficient in navigating burrows and dense underbrush to flush out prey. Today, they are primarily kept as companion animals, adapting well to various home environments.