| Head and Skull |
The skull is square, flat on top, free from wrinkles, cheeks flat, brow abrupt and the stop well defined. The ideal Boston Terrier expression is alert and kind, indicating a high degree of intelligence. This is a most important characteristic of the breed. The muzzle is short, square, wide and deep and in proportion to the skull. It is free from wrinkles, shorter in length than in width or depth; not exceeding in length approximately one-third of the length of the skull. The muzzle from stop to end of the nose is parallel to the top of the skull. The nose is black and wide, with a well defined line between the nostrils.Disqualify: Dudley nose. Fault: Pinched or wide nostrils. |
| Eyes |
The eyes are wide apart, large and round and dark in colour. The eyes are set square in the skull and the outside corners are on a line with the cheeks as viewed from the front.Disqualify: Eyes blue in colour or any trace of blue.Fault: Eyes showing too much white or haw. |
| Ears |
The ears are small, carried erect, either natural or cropped to conform to the shape of the head and situated as near to the corners of the skull as possible. [Note: Dogs with cropped ears cannot be exhibited in Australia.] |
| Mouth |
The jaw is broad and square with short regular teeth. The bite is even or sufficiently undershot to square the muzzle. The chops are of good depth, but not pendulous, completely covering the teeth when the mouth is closed.Serious Faults: Wry mouth; any showing of the tongue or teeth when the mouth is closed. |
| Neck |
The length of neck must display an image of balance to the total dog. It is slightly arched, carrying the head gracefully and setting neatly into the shoulders. |
| Forequarters |
The shoulders are sloping and well laid back, which allows for the Boston Terrier's stylish movement. The elbows stand neither in nor out. The forelegs are set moderately wide apart and on a line with the upper tip of the shoulder blades. The forelegs are straight in bone with short, strong pasterns. The dewclaws may be removed.Fault: Legs lacking in substance. |
| Body |
The back is just short enough to square the body. The topline is level and the rump curves slightly to the set-on of the tail. The chest is deep with good width, ribs well sprung and carried well back to the loins. The body should appear short.Serious Faults: Roach back, sway back, slab-sided. |
| Hindquarters |
The thighs are strong and well muscled, bent at the stifles and set true. The hocks are short to the feet, turning neither in nor out, with a well defined hock joint.Fault: Straight in stifle. |
| Feet |
Front feet are small, round and compact, turned neither in nor out, with well arched toes and short nails.Hind feet are small and compact with short nails.Fault: Splay feet. |
| Tail |
The tail is set on low, short, fine and tapering, straight or screw and must not be carried above the horizontal.(Note: The preferred tail does not exceed in length more than one-quarter the distance from set-on to hock.)Disqualify: Docked tail. Fault: Gaily carried tail. |
| Gait/Movement |
The gait of the Boston Terrier is that of a sure footed, straight gaited dog, forelegs and hindlegs moving straight ahead in line with perfect rhythm, each step indicating grace and power.Faults: There will be no rolling, paddling, or weaving when gaited. Hackney gait.Serious Faults: Any crossing movement, either front or rear. |
| Coat |
The coat is short, smooth, bright and fine in texture. |
| Colour |
Brindle, seal, or black with white markings. Brindle is preferred ONLY if all other qualities are equal. (Note: SEAL DEFINED. Seal appears black except it has a red cast when viewed in the sun or bright light.)Disqualify: Solid black, solid brindle or solid seal without required white markings. Grey or liver colours.Required Markings: White muzzle band, white blaze between the eyes, white forechest.Desired Markings: White muzzle band, even white blaze between the eyes and over the head, white collar, white forechest, white on part or whole of forelegs and hindlegs below the hocks. (Note: A representative specimen should not be penalised for not possessing "Desired Markings".)A dog with a preponderance of white on the head or body must possess sufficient merit otherwise to counteract its deficiencies. |
| Size |
Weight not to exceed 11.4 kg (25 lbs). |