The Bullmastiff is a powerful dog that was originally developed for protection. English gamekeepers in the mid-19th century crossed the Mastiff and the Bulldog. The result was a powerful, fearless dog that could stop poachers in their tracks.

Today’s Bullmastiff is still a highly capable guard dog, but the breed is most treasured as a companion. Despite it’s powerful and somewhat intimidating appearance, this is a gentle and affectionate dog that forms a solid bond with it’s family members. However, the Bullmastiff’s tough side does instinctively comes out when necessary. One important thing to know about this breed: be prepared for slobber. The Bullmastiff owner tends to carry around a drool rag. If this sort of thing bothers you, then look elsewhere for the breed of your dreams. Otherwise, there’s a lot to love about these big sweeties. Could this breed be the choice for you? Learn all about the Bullmastiff and see for yourself.




The Bullmastiff was developed in England during the mid-1800s. Gamekeepers needed a dog to protect their game from poachers, and they experimented with crossbreeding. At the time, Bulldogs were fierce and intrepid – much more than today’s Bulldog. Yet the breed was too small to take down a human. The Mastiff was too large and slow to do the job, but crossing the two breeds resulted in the ideal guard dog. Though the Bullmastiff still makes an excellent guard dog, it is betten known today as a friendly companion and wonderful family dog. This breed was recognized by the AKC in 1933.


100-130 pounds


fawn, red or brindle

Health Problems:

Responsible breeders strive to maintain the highest breed standards as established by kennel clubs like the AKC. Dogs bred by these standards are less likely to inherit health conditions. However, some hereditary health problems can occur in the breed. The following are some conditions to be aware of:
  • Hip Dysplasia
  • Ruptured Cruciate Ligament
  • Gastric Dilatation-Volvulus
  • Ectropion

About the Breed:

The Bullmastiff is large-boned and muscular working dog. Its origins as a Mastiff/Bulldog cross are apparent in its appearance. In personality, this breed is smart, alert and loyal. Though the Bullmastiff has a natural protective instinct, the breed is typically quite gentle around children and others who pose no threat.

The Mastiff has a short haircoat that typically needs little more than routine grooming. This breed is a moderately high shedder. Additionally, the Bullmastiff’s ears and facial skin folds (if present) should be kept clean and dry. This breed is a drooler, so be prepared when he shakes his head! You’ll want to carry a slobber rag for this one.

Like all dogs, proper training and socialization is important for the Bullmastiff. Overall, the breed is smart, but also has an independent streak. Training will require firm consistency. The Bullmastiff is not overly active, but the breed needs routine exercise to remain fit and motivated. A word of caution: the Bullmastiff is vulnerable to overheating due to its short snout. Don’t overdo exercise, and be sure to keep your dog cool in hot weather.

Bullmastiffs are very gentle companions and family protectors that make lovely family pets. They will get along wonderfully with children when properly trained and socialized. These dogs are quite versatile as well, even adapting to apartment life provided they get plenty of daily exercise. Above all, the Bullmastiff is a loyal and affectionate house pet that forms a close bond with its humans.

People who know Bullmastiffs simply cannot say enough wonderful things about this breed. Have you been lucky enough to share your life with a Bullmastiff?