The American Staffordshire Terrier, also known as the AmStaff, is a medium-sized, short-coated American dog breed recognized by the American Kennel Club, but not the United Kennel Club, which instead allows American Staffordshire Terriers to be registered under the American Pit Bull Terrier breed. The American Staffordshire Terrier stands 18–19 in (46–48 cm) tall and weighs between 40–70 lb (18–32 kg). The American Kennel Club (AKC) describes the breed as "confident, smart and good-natured". American Staffordshire Terriers are similar to the American Pit Bull Terrier, sharing ancestry, temperament, and size, although American Staffordshire Terriers are typically stockier than American Pit Bull Terriers. The American Staffordshire should not be confused with the "Staffy" Staffordshire Bull Terrier of the United Kingdom.

Closest relatives