Bull terrier is a medium-sized dog that originally was bred in England from the bulldog and the old white English terrier. The bull terrier has the thick body and good nature of the bulldog, and the intelligence and quickness of the terrier. It weighs from 40 to 60 pounds (18 to 27 kilograms). It has a long, egg-shaped head; small, bright eyes; and small, pointed ears. The dog’s straight tail is thick at the base and tapers to a point. Its coat is short and smooth. There are two varieties of bull terrier. One is all white, and the other is brindle with white markings. The bull terrier was used in England for dog baiting (fighting) and for catching rats. Today, the dog is prized as a pet and for its strength.