The American Staffordshire Terrier is a medium-sized, short-coated American dog breed also known as the Amstaff Or Staffy/Staffie. They are smart, confident, good-natured companions. The American Staffordshire Terrier is closely related to the American Pit Bull Terrier (APBT), but over the years the two breeds have gone their separate ways.   American Staffordshire terrier content overview History