The Manchester terrier is one breed with two varieties: standard and toy. The toy can weigh up to 12 pounds, the standard over 12 pounds but not to exceed 22 pounds. In both varieties, the only allowable color is black-and-tan, which accounts for the breed’s original name: the black and tan terrier. Well-muscled and sleek, the Manchester’s physical appearance attests to its ability to perform the work for which it was bred to do: to hunt and exterminate vermin. Overall, the Manchester is a hardy breed, very adaptable and an excellent companion.