Bullmastiff Breed Standard

General Appearance
  • Strong, powerful, alert, active and capable of great endurance. The foundation breeding was 60% Mastiff and 40% Bulldog. The breed was created in England by gamekeepers for protection against poachers.
Size, Proportion, Substance
  • Size - Dogs, 25 to 27 inches at the withers, and 110 to 130 pounds weight. Females, 24 to 26 inches at the withers, and 100 to 120 pounds weight.
  • Proportion - The length from tip of breastbone to rear of thigh exceeds the height from withers to ground only slightly, resulting in a nearly square appearance.

  • Expression - Keen, alert, and intelligent.
  • Eyes - Dark and of medium size.
  • Ears -V-shaped and carried close to the cheeks, set on wide and high, level with occiput and cheeks, giving a square appearance to the skull; darker in color than the body and medium in size.
  • Skull - Large, with a fair amount of wrinkle when alert; broad, with cheeks well developed.
  • Forehead - flat.
  • Stop - Moderate
  • Muzzle - Broad and deep; its length, in comparison with that of the entire head, approximately as 1 is to 3. Lack of foreface with nostrils set on top of muzzle is a reversion to the Bulldog and is very undesirable. A dark muzzle is preferable.
  • Nose - Black, with nostrils large and broad.
  • Flews - Not too pendulous.
  • Bite - Preferably level or slightly undershot. Canine teeth large and set wide apart.

Neck, Topline, Body
  • Neck - Slightly arched, of moderate length, very muscular, and almost equal in circumference to the skull.
  • Topline - Straight and level between withers and loin.
  • Body - Compact. Chest wide and deep, with ribs well sprung and well set down between the forelegs.
  • Back - Short, giving the impression of a well balanced dog.
  • Loin -Wide, muscular, and slightly arched, with fair depth of flank.
  • Tail - Set on high, strong at the root, and tapering to the hocks. It may be straight or curved, but never carried hound fashion.
  • Shoulders - muscular but not loaded, and slightly sloping.
  • Forelegs - straight, well boned, and set well apart; elbows turned neither in nor out.
  • Pasterns straight, feet of medium size, with round toes well arched. Pads thick and tough, nails black.
  • Broad and muscular, with well developed second thigh denoting power, but not cumbersome. Moderate angulation at hocks. Cowhocks and splay feet are serious faults.

  • Short and dense, giving good weather protection.

  • Red, fawn, or brindle. Except for a very small white spot on the chest, white marking is considered a fault.
  • Free, smooth, and powerful. When viewed from the side, reach and drive indicate maximum use of the dog's moderate angulation. Back remains level and firm. Coming and going, the dog moves in a straight line. Feet tend to converge under the body, without crossing over, as speed increases. There is no twisting in or out at the joints.
  • Fearless and confident yet docile. The dog combines the reliability, intelligence, and willingness to please required in a dependable family companion and protector.