The Pit Bull itself is only one breed, but there are two other
breeds that are very similar. These are the American Staffordshire
Terrier and the Staffordshire Bull Terrier. The Pit Bull is not an
officially recognised breed and so is not bred to a standard. The
Staffordshire Bull Terrier is a smaller recognised version of the
Pit Bull, and the American Staffordshire Terrier is a recognised
version of the Pit Bull.