We begin this article with the basic facts about the breed, then follow up with an in-depth look at their personality.

Group: Working

Weight: male 110-130, female: 100-120 lbs

Height: male: 25-27, female: 24-26 inches


The Bullmastiff is a cross between the Bulldog and the Mastiff, and consists of 60% Mastiff and 40% Bulldog. This breed was developed in England, and these dogs go as far back as 1795. These dogs were used by gamekeepers to follow, tackle and hold poachers. Although these dogs were aggressive and frightening, they were trained not to bite the intruders. The Bullmastiff is a respected hunting guard, and is also used successfully in army and police work. The Diamond Society of South Africa has also used these dogs as watchdogs.


Bullmastiffs are very reliable and observant guard dogs. This is a dog with a very pleasant nature, although they can be stubborn at times. In general these dogs are passive, unless they are aggravated. The Bullmastiff is a brave dog that is protective, but at the same time very affectionate. Although they are hesitant to attack, they will catch an impostor if it is required of them. Bullmastiffs are also very tolerant of children. This breed is intelligent, calm and reliable. These dogs prosper on human attention. The Bullmastiff is a particularly imposing dog and will need a firm owner.

It is vital for this breed to receive sufficient obedience training, and also to not pull on the restraint.


The grooming requirements for the Bullmastiff are not very high. Their coats can be kept in a good condition by brushing it on an occasional basis. Dead and loose hair can be removed by using a glove or damp cloth to wipe down their coat. The grooming needs of this breed are a bit higher during the shedding season.


The Bullmastiff is especially sensitive to the tone of their owners’ voice. It is crucial for this dog to be handled firmly if they are to achieve success in training. These dogs perform fairly well in obedience training and exceptionally well when used as guard or watch dogs. The training environment for the Bullmastiff should also be firm patient and fair. These dogs will not perform well if cruel or unkind training methods are employed.

Health problems

In general the Bullmastiff is a healthy and athletic dog, but they are prone to several health problems. These problems include hip and elbow dysplasia, progressive retinal atrophy, entropion and lymphoma cancer which is fairly common in this breed.

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