The term pit bull is a generic term used to describe dogs with similar physical characteristics. Usually a pit bull is considered one of several breeds including the American Pit Bull Terrier, the American Staffordshire Terrier, the Staffordshire Bull Terrier, Bull Terrier or any mix thereof. In some parts of the world, the American Bulldog and Dogo Argentino are also classified as a Pit Bull-type dog, despite major genetic differences. Any dog that is mixed with a bully breed may also be called a pit bull including those that are descended from the English Bulldog, French Bulldog, Boston Terrier and Cane Corso. The pitbull is not a distinct breed which may make it difficult for experts to identify