The Welsh Terrier is a small to medium-sized dog breed that originated in Wales. The species has a long history, with references to similar dogs dating back to the 1500s. The Welsh Terrier was initially bred to hunt small game and vermin and was prized for its tenacity, speed, and agility.

The Welsh Terrier is a member of the Terrier group and shares many characteristics common to terrier breeds. They are small, sturdy dogs with short, wiry coats that come in various colors, including black and tan, black and grizzle, and reddish-brown. They have a distinctive, square-shaped head, a beard and eyebrows, and a medium-length tail that is often carried upright.

One interesting fact about Welsh Terriers is that they were once used for a type of dogfighting called "badger baiting." In this sport, two dogs would be pitted against a badger confined in a pit, and the winner was the dog that could kill or subdue the badger. Welsh Terriers were prized for their courage and ferocity and were often used in badger baiting and other blood sports such as rat-catching and otter hunting.

Welsh Terriers are known for their intelligence and trainability. They excel in obedience, agility, and other canine sports. They are affectionate and loyal to their owners. Despite their small size, they require regular exercise to stay healthy and happy.