Bullmastiff
Working Group

Height at Shoulders
Females 24-26 in, Males 25-27 in
Weight
Females 100-120 lbs, Males 110-130 lbs
Life Expectancy
7-9 yrs
History
The Bullmastiff, nicknamed "the Gamekeeper's Night Dog", was developed in England during the 19th century to reduce poaching on estates. The huge estates owned by aristocrats had a plethora of game animals, which enticed many poachers. During this time, the penalty for poaching on estates was often the death sentence, giving poachers a huge motivation to not get caught. Generally, if they were to be confronted by a gamekeeper, their response would be to fight rather than willingly accept their fate through the legal system. The estate gamekeepers needed backup, so they bred Bullmastiffs, which are approximately 60% Mastiff, 40% Bulldog. The traits they selected for included strength, stamina, and bravery to chase and pin down poachers without actually hurting them. Today, Bullmastiffs are employed as household guardians because of their gentle, family-oriented temperament.
Breed Characteristics
While not all Bullmastiffs share the exact same personality and temperament, there are certain generalizations that can be made about the breed. In addition to genetics, a dog’s environment, training, socialization, and many other factors all contribute to their personality and behavior.
Intelligence
Affection Towards Family
Friendliness Towards Strangers
Friendliness Towards Other Dogs
Exercise Needs
★★★☆☆
★★★★★
★★★☆☆
★★★★☆
★★★☆☆
Energy Level
Sensitivity
Noise Level
Prey Drive
Shedding
★★☆☆☆
★★★★☆
★★★★☆
★★★☆☆
★☆☆☆☆
Intelligence
★★★☆☆
Affection Towards Family
★★★★★
Friendliness Towards Strangers
★★★☆☆
Friendliness Towards Other Dogs
★★★★☆
Exercise Needs
★★★☆☆
Energy Level
★★☆☆☆
Sensitivity
★★★★☆
Noise Level
★★★★☆
Prey Drive
★★★☆☆
Shedding
★☆☆☆☆
Common Traits
Courageous, confident, and protective- even when wary of someone, generally only bite as a last resort
Prone to flatulence and heavy drooling
Low-key and calm but still comical once they grow out of puppyhood
Have high pain tolerance so might be hard to tell if they're hurt
Independent and can be comfortable left alone all day if given a few hours of love and attention at night
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