Dog Breed Profile

Home Dog Breeds Working Bullmastiff

Bullmastiff History

The Bullmastiff is a medium-sized, muscular, well balanced, powerful, and courageous British and Irish breed of domestic dog. The strong head, with the characteristic “drop” ears, gives the dog an aristocratic appearance. The Bullmastiff is a crossbreed between the Bulldog and the Mastiff, and is sometimes called the “Bull and Mastiff”. The “Bull and Mastiff” as it is known today was developed by breeders who wanted to create a larger, more powerful version of the Bulldog, which became the ancestor of the Staffordshire bull terrier. The Bullmastiff is a loyal, courageous, and good-natured family pet. The Bullmastiff was recognized by the United Kennel Club (UKC) in 1924, and is also recognized by the American Kennel Club (AKC), the Kennel Club (KC), and the Canadian Kennel Club (CKC).

Time of Origin


Country of Origin



Mastiff, Bulldog

Bullmastiff Physical Characteristics

The Bullmastiff is a medium sized, stocky, muscular, and strong, with a large head. They have blocky, strong legs and a thick, corded neck. Their short, coarse, water-repellant double coats come in red, fawn, brindle, white, or brindle and white. Their almond-shaped,slightly slanted eyes come in dark brown or black, although some have a light brown iris. They have a wide, blunt muzzle and a black nose. Their lips are thick and powerful. Their ears are big, wide, and pendant. Their tail is thick and strong and reaches to the knees.

Eye Colors


Nose Colors


Coat Colors


Height Range

Male Height Range: 25 – 27 inches

Female Height Range: 24 – 26 inches

Weight Range

Male Weight Range: 110 – 133 lbs

Female Weight Range: 100 – 120 lbs

Bullmastiff Health

Description of breed health.


8-10 yrs

Bullmastiff Health Concerns

Gastric Torsion, Elbow Dysplasia, Hip Dysplasia, Cancer, Entropion, Progressive Retinal Atrophy

Bullmastiff Temperament and Behaviour

The Bullmastiff is a gentle, trustworthy, and devoted dog. They are very intelligent and make great watchdogs, but should not be aggressive towards people. They are good-natured and mellow, and are rarely aggressive towards people or other dogs. They are protective of their territory, but can be calm enough to let small children play with them.

Bullmastiff Activity Requirements

The Bullmastiff is a large, powerful, and muscular dog. They were originally bred in Great Britain for guard work, and they were often used in bear baiting. Today, they are a popular pet. The Bullmastiff is a relatively high-energy dog that requires plenty of exercise and mental stimulation. They are best suited to homes with yards where they can run and play in a safe environment. While they are not ideal for apartment living, they can adapt to small living spaces as long as they get regular exercise. The Bullmastiff may not be the best choice for first-time dog owners. They are strong-willed and stubborn, and they require an experienced owner who is able to assert their leadership.

Miles Per Day


Activity Per Day


Daily Food

3 cups

Kennel Club Recognition

American Kennel Club

Recognized by the American Kennel Club

Bullmastiff is part of the Working group.

Visit the American Kennel Club website.

The Kennel Club

Recognized by The Kennel Club

Bullmastiff is part of the Working group.

Visit the Kennel Club website.

Australian National Kennel Council

Recognized by the Australian National Kennel Council

Bullmastiff is part of the Utility group.

Visit the Australian National Kennel Council website.

Canadian Kennel Club

Recognized by the Canadian Kennel Club

Bullmastiff is part of the Working Dog group.

Visit the Canadian Kennel Club website.