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Bullmastiff – dog breed
Bullmastiff – dog breedBullmastiff – dog breed
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Bullmastiff

FCI 2 · Nr. 157
The Bullmastiff is a powerful, calm guardian from England, bred to catch poachers without injuring them. Behind his impressive bulk is a self-assured dog, devotedly loyal to his family, meant for experienced hands.
Size
Very large
Height at withers
61–69 cm
Weight
41–59 kg
Life expectancy
~8–10 years
Coat
Short, hard and dense; fawn, red or brindle with a dark mask.
Origin
Great Britain
FCI
FCI 2 · Nr. 157

🧠 Temperament & character

The Bullmastiff is calm, self-assured and devotedly loyal to his family – a gentle giant that seeks a close bond and is hard to rattle. As a powerful guardian he is brave and protective, yet not aggressive without cause but level-headed and watchful. Towards strangers he is reserved, which is why early socialisation is important. He can be headstrong and therefore needs consistent, calm leadership without harshness. With the family's children he is usually patient and loving, but his size and strength call for constant supervision.

📜 Origin & history

The Bullmastiff arose in 19th-century England when gamekeepers needed a dog to catch poachers on the great estates and in the forests. By crossing the Mastiff and the Bulldog, a dog was created that was fast, brave and strong enough to bring an intruder to the ground and hold him without biting. He became known as the 'Gamekeeper's Night Dog'. Later he changed from a working dog into a valued guard and family dog.

✂️ Grooming, care & training

The short coat is uncomplicated and needs only occasional brushing; the facial folds should be kept clean and dry. The Bullmastiff has a moderate need for exercise and is content with daily, relaxed walks – prolonged exertion, especially in heat, should be avoided because of the somewhat shortened muzzle. He tends to drool and may snore. What matters most is an early, consistent and calm upbringing, so that the powerful dog is well socialised and safely manageable from an early age.

🩺 Health

The Bullmastiff has a relatively short life expectancy of around eight to ten years and carries several serious health risks. These include hip and elbow dysplasia, life-threatening gastric torsion, various types of cancer such as lymphoma, and heart disease; eyelid malpositions also occur. Responsible breeders X-ray the hips and elbows, examine the heart and choose breeding animals with a healthy build and a stable temperament. Excess weight and one-sided strain should be consistently avoided.

🏡 Who is this breed right for?

The Bullmastiff belongs in the hands of experienced, calm owners with a house, space and the necessary understanding of a powerful guardian. For beginners, very small apartments or people with little time for training he is not suitable. His gentle family nature makes him a loving companion, but his strength calls for early conditioning and consistent leadership. In Switzerland, special regulations may apply to large molossers depending on the canton, which should be clarified before acquiring one.

❓ Frequently asked questions

Is the Bullmastiff a good guard dog?
Yes, he is by nature a calm, brave guardian that deters through his presence and protective stance without being needlessly aggressive.
How much exercise does a Bullmastiff need?
His needs are moderate; daily relaxed walks are enough, though caution is advised in heat because of the shortened muzzle.
Is the Bullmastiff suitable for beginners?
Rather not, because his strength, his stubbornness and his protective instinct call for experienced, consistent and calm leadership.

🏅 Find the breed club & breeders

Find the breed club in the SKG directory ↗
🐾 You'll find reputable breeders and puppies through the official breed club — the SKG lists the responsible clubs, which in turn list vetted breeders.