Fédération Cynologique Internationale

United Kennel Club

The Kennel Club

Boston Terrier

Boston Terrier

Boston Terrier


ORIGIN

:
FCI
U.S.A.

PUBLISHED

:
FCI
28.01.2013.
KC
October 2009

UTILISATION

:
FCI
Companion.

CLASSIFICATION

:
FCI
Group 9Companion and Toy Dogs
Section 11Small Molossian type Dogs
Without working trial

UKC
Companion Dog
KC
Utility

BRIEF HISTORICAL SUMMARY

:
UKC
The Boston Terrier is truly an American breed, being a down-sized version of the Bull-and-Terrier types that were so popular in the early days of our country. Breeds thought to have had an influence in the development of the Boston Terrier include the American Pit Bull Terrier, Boxer, English Bull Terrier, French Bulldog and English Bulldog. In the early days of the breed they were often referred to by various names, including Round-headed Bull and Terriers, American Bull Terriers and Bullet Heads. The Boston Terrier was recognized by the United Kennel Club in 1914.

GENERAL APPEARANCE

:
FCI
The Boston Terrier is a lively, highly intelligent, smooth coated, short-headed, compactly built, short-tailed, well balanced dog, brindle, seal or black in colour and evenly marked with white. The head is in proportion to the size of the dog and the expression indicates a high degree of intelligence. The body is rather short and well knit, the limbs strong and neatly turned, the tail is short and no feature is so prominent that the dog appears badly proportioned. The dog conveys an impression of determination, strength and activity, with style of a high order; carriage easy and graceful. A proportionate combination of « Colour and White Markings » is a particularly distinctive feature of a representative specimen. « Balance, Expression, Colour and White Markings » should be given particular consideration in determining the relative value of general appearance to other points. The clean-cut short backed body of the Boston Terrier coupled with the unique characteristics of his square head and jaw, and his striking markings have resulted in a most dapper and charming American original The Boston Terrier. In a comparison of specimens of each sex, the only evident difference is a slight refinement in the bitch’s conformation.
UKC
The Boston Terrier is a lively, highly intelligent, smooth coated, short-headed, compactly built, short-tailed, well-balanced dog. They are brindle, seal or black in color. The Boston is a sturdy dog and must not appear to be either spindly or coarse. Bone and muscle must be in proportion, as well as an enhancement, to the dog's weight and structure. The length of leg must balance with the length of body to give the Boston its striking, square appearance. The strong limbs are neatly turned. The tail is short. No feature is so prominent that the dog appears badly proportioned. When comparing specimens of each sex, the only evident difference is a slight refinement in the bitch's conformation. A proportionate combination of color and white markings are to be given particular consideration in determining the relative value of general appearance to other points.
KC
Smooth-coated, relatively short-headed, compactly built, short-tailed, well balanced dog of medium size, brindle in colour, evenly marked with white. Body rather short and well knit; limbs strong and neatly turned; tail short and no feature so prominent that the dog appears badly proportioned. Dog must convey an impression of determination, strength and activity, with style of a high order; carriage easy and graceful.

IMPORTANT PROPORTIONS

:
FCI
The length of leg must balance with the length of body to give the Boston Terrier its striking square appearance. The Boston Terrier is a sturdy dog and must not appear to be either spindly or coarse. The bone and muscle must be in proportion as well as an enhancement to the dog’s weight and structure.
KC
Lively and intelligent.

BEHAVIOUR / TEMPERAMENT

:
FCI
The Boston Terrier is a friendly and lively dog. The breed has an excellent disposition and a high degree of intelligence, which makes the Boston Terrier an incomparable companion.
UKC
The ideal Boston expression is a most important characteristic of the breed; it is alert and kind, indicating a high degree of intelligence. The Boston is a friendly and lively dog. The dog conveys an impression of determination, strength and activity; with style of a high order. Carriage is easy and graceful. The breed has an excellent disposition and a high degree of intelligence, which makes the Boston an incomparable companion.
KC
Determined and strong willed.

HEAD

:
UKC
The head is in proportion to the size of the dog, and its expression indicates a high degree of intelligence.
KC
Skull square in appearance, flat on top, free from wrinkles; cheeks flat; brow abrupt, stop well defined. Muzzle relatively short, square, wide and deep with no tendency to taper and in proportion to skull; free from wrinkles; shorter in length than in width and depth, approximately one-third of length of skull; width and depth carried out well to end; muzzle from stop to end of nose on a line parallel to top of skull; nose black, wide with well defined line between nostrils. Jaws broad and square. Flews of good depth, not pendulous, completely covering teeth when mouth closed. Head in proportion to size of dog.

CRANIAL REGION

:

Skull

:
FCI
Square, flat on top, free from wrinkles; brow abrupt.
UKC
The skull is square, flat on top and free from wrinkles. There is an abrupt brow, and a well-defined stop. The cheeks are flat.

Stop

:
FCI
Well defined.

FACIAL REGION

:

Nose

:
FCI
Black and wide, with a well defined line between the nostrils. Well opened nostrils.
UKC
The nose is black and wide, with a well-defined line between the nostrils.

Muzzle

:
FCI
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.
UKC
The muzzle is short, wide and deep, and in proportion to the skull. It is shorter in length than in width and depth, not to exceed in length approximately one-third of the length of the skull; and is free from wrinkles. The jaw is broad. The chops are of good depth, but not pendulous, completely covering the teeth when the mouth is closed.
KC
Teeth short and regular, bite even, or sufficiently undershot to square muzzle.

Lips

:
FCI
The chops are of good depth, but not pendulous, completely covering the teeth when the mouth is closed.

Jaws/Teeth

:
FCI
Jaws broad and square with short, regular teeth. The bite is even or sufficiently undershot to square the muzzle.
UKC
A full complement of strong, white, regular teeth meet in an even bite or one sufficiently undershot to square the muzzle.

Cheeks

:
FCI
Flat.

Eyes

:
FCI
Wide apart, large, round and dark in colour. Set square in the skull and the outside corners are on a line with the cheeks as viewed from the front.
Expression: Alert and kind, indicating a high degree of intelligence. This is a most important characteristic of the breed.
UKC
The large, round eyes are dark in color and wide apart. They are set square in the skull. When viewed from the front, the outside corners are on a line with the cheeks. The alert, kind expression is an important characteristic of the breed.
KC
Wide apart, round and not too large, dark in colour; expression alert, kind and intelligent. Eyes set square in skull, outside corners on a line with cheeks when viewed from front.

Ears

:
FCI
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.
UKC
The small ears may be left natural or cropped to conform to the shape of the head. They are carried erectly and situated as near to the corners of the skull as possible.
KC
Carried erect; small, thin, situated as near corner of skull as possible.

NECK

:
FCI
The length of the 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.
UKC
Neck length must display an image of balance to the total dog. The neck is slightly arched, carrying the head gracefully, and setting neatly into the shoulders.
KC
Of fair length, slightly arched, carrying head gracefully; neatly set into shoulders.

BODY

:
FCI
The body should appear short.
UKC
The body is rather short and well knit. The back is just short enough to square the body. The topline is level. The rump curves slightly to the set-on of the tail. The chest is deep, with good width. The well-sprung ribs are carried well back to the short, strong loins. The flank is very slightly cut-up.
KC
Deep with good width of chest; back short; ribs deep and well sprung, carried well back to loins; loins short and muscular; rump curving slightly to set-on of tail; flank very slightly cut up; body appears short but not chunky.

Topline

:
FCI
Level.

Back

:
FCI
Just short enough to square the body.

Croup

:
FCI
Curves slightly to the set-on of the tail.

Chest

:
FCI
Deep with good width; ribs well sprung and carried well back to the loins.

TAIL

:
FCI
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).
UKC
The short, fine, tapering tail is set on low and must not be carried above the horizontal. It may be straight or screw. The preferred tail does not exceed, in length, more than one-quarter the distance from the set-on to the hock.
KC
Set on low; short, fine, tapering, straight or curled; devoid of fringes or coarse hair, never carried above horizontal.

LIMBS

:

FOREQUARTERS

:
FCI
Forelegs set moderately wide apart and on a line with the upper tip of the shoulder-blades; straight in bone.
UKC
The sloping shoulders are well laid back, allowing for the Boston's stylish movement.
KC
Shoulders sloping, legs set moderately wide apart on line with point of shoulders; straight in bone and well muscled; pasterns short and strong. Elbows turning neither in nor out.

Shoulder

:
FCI
Sloping and well laid back, which allows for the Boston Terrier’s stylish movement.

Elbow

:
FCI
Stand neither in nor out.

FORELEGS

:
UKC
The forelegs are set moderately apart and on a line with the upper tip of the shoulder blades. The forelegs are straight in bone. The elbows stand neither in nor out. The pasterns are short and strong. Dewclaws may be removed from the forelegs.

Pastern

:
FCI
Short, strong. The dewclaws may be removed.

FEET

:
UKC
The forefeet are small, round and compact, with well-arched toes and short nails. They turn neither in nor out. The hind feet are small and compact, with short nails.
KC
Round, small, compact, turning neither in nor out; toes well arched.

Forefeet

:
FCI
Small, round and compact, turned neither in nor out, with well arched toes and short nails.

Hind feet

:
FCI
Small and compact with short nails.

HINDQUARTERS

:
KC
Legs set true, good turn of stifle, hocks well let down; turning neither in nor out; thighs strong and well muscled.

Thigh

:
FCI
Strong, well muscled, and set true.

Stifle

:
FCI
Well bent.

HIND LEGS

:
UKC
The thighs are strong and well muscHIND LEGS - The thighs are strong and well muscled. The stifles are bent and set true. The hock joint is well defined. The hocks are well let down and turn neither in nor out.

Hock

:
FCI
Short to the feet, turning neither in nor out, with a well defined hock joint.

GAIT / MOVEMENT

:
FCI
The gait of the Boston Terrier is that of a sure footed, straight gaited dog, forelegs and hind legs moving straight ahead in line with perfect rhythm, each step indicating grace and power.
UKC
The gait of the Boston is that of a sure-footed, straight-gaited dog. The forelegs and hind legs move straight ahead in line with perfect rhythm, each step indicating grace and power.
KC
Easy and graceful. Sure-footed straight-gaited, forelegs and hindlegs moving straight ahead with perfect rhythm. Each step indicating grace and power.

COAT

:

HAIR

:
FCI
Short, smooth, bright and fine in texture.
UKC
The short, smooth coat is bright, and fine in texture.
KC
Short, smooth, lustrous and fine in texture.

COLOUR

:
FCI

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).
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 hind legs below the hocks. (Note a representative specimen should not be penalized 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.
UKC
The only acceptable colors are Brindle, Seal, or Black, with white markings. Brindle is preferred only if all other qualities are equal. Seal appears black except that it has a red cast when viewed in the sun or bright light. The required markings are a white muzzle band; a white blaze between the eyes; and a white forechest. The desired markings are a white muzzle band; an even white blaze between the eyes and over the head; a white collar and white on part or whole of the forelegs and hind legs below the hocks. A dog with a preponderance of white on the head or body must possess sufficient merit otherwise to counteract its deficiencies.
KC
Brindle with white markings; brindle must show throughout body distinctly; black with white markings but brindles with white markings preferred. Ideal markings: white muzzle, even white blaze over head, collar, breast, part or whole of forelegs, and hindlegs below hocks.

SIZE

:
KC
Weight not exceeding 11.5 kgs (25 lbs) divided by classes as follows: Lightweight: under 6.8 kgs (15 lbs); Middleweight: 6.8 kgs (15 lbs) and under 9.1 kgs (20 lbs); Heavyweight: 9.1 kgs (20 lbs) and under 11.4 kgs (25 lbs).

Weight

:
FCI

Weight is divided by classes as follows under 15 pounds (6,8 kg),
15 pounds and under 20 pounds (6,8 to 9 kg),
20 pounds and not to exceed 25 pounds (9 to 11,35 kg).
UKC
Under 15 pounds up to, and including, 25 pounds.

FAULTS

:
FCI

Any departure from the foregoing points should be considered a fault and the seriousness with which the fault should be regarded should be in exact proportion to its degree and its effect upon the health and welfare of the dog.
  • Blocky or chunky in appearance.
  • Pinched or wide nostrils.
  • Eyes showing too much white or haw.
  • Size of ears out of proportion to size of head.
  • Gaily carried tail.
  • Legs lacking in substance.
  • Straight in stifle.
  • Splay feet.
  • Gait rolling, paddling or weaving; hackney gait.
UKC

Eyes: Eyes showing too much white or haw.
Nose: Pinched or wide nostrils.
Ears: Ear size out of proportion to the size of the head.
Tail: Gaily carried tail.
Gait: Rolling. Paddling. Weaving. Hackney gait.
KC
Any departure from the foregoing points should be considered a fault and the seriousness with which the fault should be regarded should be in exact proportion to its degree and its effect upon the health and welfare of the dog and on the dog’s ability to perform its traditional work.

SERIOUS FAULTS

:
FCI

  • Wry mouth.
  • Any showing of the tongue or teeth when the mouth is closed.
  • Roach back or sway back.
  • Ribcage slab-sided.
  • Gait Any crossing movement, either front or rear.
UKC

Appearance: Blocky and/or chunky in appearance.
Teeth: Wry jaw. Any showing of the teeth when the mouth is closed.
Body: Roach back. Sway back. Slab-sided.
Gait: Any crossing movement, front or rear.

DISQUALIFYING FAULTS

:
FCI

  • Aggressive or overly shy.
  • Dudley nose.
  • Eyes blue in colour or any trace of blue.
  • Docked tail.
  • Solid black, solid brindle, or solid seal without required white markings.
  • Grey or liver colours.
Any dog clearly showing physical or behavioural abnormalities shall be disqualified.
UKC

Unilateral or bilateral cryptorchid. Viciousness or extreme shyness. Weight over 25 pounds. Any trace of blue in eyes. Dudley nose. Docked tail. No tail. Solid seal, black or brindle without the required white markings. Gray or liver colors. Albinism.
Eyes: Any trace of blue in eyes.
Nose: Dudley nose.
Tail: Docked tail; no tail.
Color: Solid seal, black or brindle without the required white markings; gray or liver colors; albinism.
Weight: Weight over 25 pounds.


Anatomical Features of the dog

N.B.:

Male animals should have two apparently normal testicles fully descended into the scrotum.