Developed in Germany, the Boxer is a breed of stocky, medium-sized, short-haired dog. The coat is smooth and fawn or brindled, with or without white markings. Boxers are brachycephalic, and have a square muzzle, mandibular prognathism (an underbite), very strong jaws and a powerful bite ideal for hanging on to large prey. The Boxer was bred from the Bulldog and the now extinct Bullenbeisser and is part of the Molosser group.
The Boxer was first exhibited in a dog show for St. Bernards at Munich in 1895, the first Boxer club being founded the next year. Based on 2006 American Kennel Club statistics, Boxers are the seventh most popular breed of dog in the United States—a position they have held since 2002—with approximately 35,388 new dog registrations during the year