The Yorkshire Terrier is a small breed of terrier dog, developed in the nineteenth century in Yorkshire County, England, to catch rats in garment factories. It is also used to prime rats. Its maximum size is 7 (3.2 kg) and its gray, black and beige coat. The breed is nicknamed Yorkie and is placed in the Terrier Terrier Toy Terrier section by the International Cynological Federation and in the Toy or Companion Group by other kennel clubs, including the American Kennel Club, although all agree that the breed is a burrow. .