The staffordshire bull terrier American staffordshire terrier and the Argentinean Dogo all resemble the pitbull

English bull terrier and staffordshire bull terrier mix

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.

I can only think of 4 the American Staffordshire Terrier, Staffordshire Bull Terrier, Staffordshire Terrier, and the American Pit Bull Terrier.

The Staffordshire Bull Terrier was first bred in Staffordshire, England, using Bulldog's (not today's ones) and local Terrier's. The American Pit Bull Terrier and American Staffordshire Terrier were bred using English Staffordshire's by increasing their size and weight. Therefore, the Staffordshire Bull Terrier was the main breed used in the development of the Pit Bull - not the other way around.