American Kennel Club (AKC)
The AKC standard describes the Staffordshire as giving the impression of great strength for its size. The breed should be muscular and active with a smooth, short coat. Dogs stand 14 to 16 inches at the shoulder, with females slightly smaller. Weight ranges from 28 to 38 pounds for males and 24 to 34 pounds for females, in proportion to height. The head is short and deep through with a broad skull and pronounced cheek muscles. Eyes are dark, round, and of medium size positioned to look straight ahead. The muzzle is short with a black nose and tight lips. Ears are rose or half-pricked, not large or heavy. The neck is muscular and slightly arched, widening gradually toward the shoulders. The body shows a level topline with a deep, broad chest and well-sprung ribs. The tail is undocked, set low, tapering to a point, carried low, not curling much and may be likened to an old-fashioned pump handle.
The forequarters have straight legs set rather wide apart showing no weakness at the pasterns. Hindquarters are well-muscled with hocks well let down. Feet are of medium size, well-padded and strong. Movement is free, powerful, and agile with economy of effort. The coat is smooth, short, and close to the skin. Colors include red, fawn, white, black, blue, or any shade of brindle, with or without white markings. Black and tan or liver color are undesirable. The AKC emphasizes that this breed's defining characteristic is indomitable courage combined with great tenacity and reliability, and affection especially toward children.
Federation Cynologique Internationale (FCI)
FCI Standard Number 76 recognizes the Staffordshire under Group 3 Terriers, Section 3 Bull type Terriers without working trial. The standard describes a smooth-coated dog balanced in strength and agility. The ideal height is 36 to 41 centimeters at the withers for males and 33 to 38 centimeters for females. Weight should be 12.7 to 17.3 kilograms for males and 11 to 15.4 kilograms for females. The head is short and deep with a broad skull and very pronounced cheek muscles. The stop is distinct with a short foreface and black nose. Lips should be tight and clean. Jaws are strong with large teeth meeting in a scissor bite, where upper teeth closely overlap lower teeth and are set square to the jaws.
Eyes are preferably dark but may bear some relation to coat color, round and of medium size positioned to look straight ahead. Ear carriage may be rose or half-pricked, not large or heavy, and full drop or pricked ears are highly undesirable. The neck is muscular, rather short, and clean in outline gradually widening toward the shoulders. The body has a close-coupled appearance with a level topline, wide front, deep brisket, and well-sprung ribs. The hindquarters are well-muscled with legs parallel when viewed from behind. The tail is medium length, low set, tapering to a point and carried rather low, resembling an old-fashioned pump handle. The coat is smooth, short, and close, while acceptable colors are red, fawn, white, black, or blue, or any of these colors with white, plus any shade of brindle or brindle with white. Black and tan or liver are highly undesirable.
United Kennel Club (UKC)
The UKC recognizes the Staffordshire in the Terrier Group and describes it as a medium-sized, stocky, muscular dog with tremendous strength for its size. The breed standard emphasizes the dog's courage, intelligence, and tenacity combined with affection for friends and children. Males typically weigh 35 to 50 pounds with females 30 to 45 pounds. Height ranges from 17 to 19 inches at the withers for males and 16 to 18 inches for females. Proportion is slightly longer than tall when measured from point of shoulder to point of buttocks compared to height at withers. The head is medium length and deep through with a broad skull and well-developed cheek muscles. The muzzle is medium length, rounded on top, falling away abruptly below the eyes. Jaws are well-defined with strong lower jaw providing great punishing power. Lips fit tightly with no looseness. Nose is always black.
Eyes are round to almond shaped, set far apart and low in the skull. Dark eyes are preferred though some relation to coat color is acceptable. Ears are set high on the skull and may be cropped or natural. If natural, they should be rose or half-prick. The neck is heavily muscled, medium in length, slightly arched, widening from occiput to shoulders without looseness of skin. The topline is level from withers to croup with a slight slope at the croup to the base of the tail. Chest is deep and broad with well-sprung ribs. The tail is short compared to size and set low, tapering to a point. The coat is stiff, smooth, short, and glossy. Color can be any color, solid, parti, or patched, though all white dogs or dogs with more than 80 percent white, black and tan, and liver are less preferred. The UKC standard emphasizes the breed should be evaluated as an all-around athlete with any unsoundness considered a serious fault.
Other Organizations
The Kennel Club of the United Kingdom, as the breed's country of origin, maintains the original breed standard that influences all others. The KC standard emphasizes the Staffordshire as traditionally of indomitable courage and tenacity while being highly intelligent and affectionate especially with children. The Australian National Kennel Council and New Zealand Kennel Club follow standards very similar to the UK version. The Canadian Kennel Club recognizes the breed under similar guidelines to the AKC. Various breed clubs including the Staffordshire Bull Terrier Club of America provide additional guidance on health testing and breeding practices. All major organizations agree on the fundamental characteristics: a smooth-coated, well-balanced dog of tremendous strength for its size, combining power with agility and affection, particularly toward children, making this breed distinctive among terriers for its people-oriented temperament.