Bull terriers are a breed of dog originally bred in England for bull-baiting. Common synonyms for bull terriers include bully dogs or bully breeds. These dogs are known for their unique egg-shaped head and muscular build. Another synonym for bull terriers is mini bulls, as there is a smaller variation of the breed called mini bull terrier. These dogs are energetic and loyal companions, but they also require proper training and socialization to avoid any aggressive tendencies. Other terms that may be used to describe these dogs include pit bulls, Staffordshire bull terriers, or American bullies. No matter what term is used, bull terriers are undeniably striking and distinct dogs.