There are several kinds of bulldogs--American, English, French--then there are the Staffordshire Terriers, the American Staffordshire Terriers, the Bull Terriers, miniature Bull Terriers, and the Presa/Dogo Canario which looks a lot like a very large Am. Staff---but there in NO Pit Bull.

A "pit bull" was any dog that was game enough to fight bulls in a fighting pit.

Sorry, one of my pet peeves. Rant over for now.