The Boston Terrier is a breed of dog originating in the United States of America. This 'American Gentleman' was accepted in 1893 by the American Kennel Club as a non-sporting breed. Color and markings are important when distinguishing this breed from the AKC standard. This 'American Gentleman' was accepted in 1893 by the American Kennel Club as a non-sporting breed. Color and markings are important when distinguishing this breed from the AKC standard. They should be either black, brindle or seal with white markings. The breed is increasingly popular in dog agility competitions, obedience training, rally obedience, tracking, dock diving, flyball, weight-pulling, barn hunting and lure coursing.