Bullmastiff
VS
Saint Bernard
Bullmastiff vs Saint Bernard
Compare Bullmastiff and Saint Bernard side by side and get a clear picture of what sets the breeds apart. Explore differences in size, weight, temperament, activity level, and other key traits to more easily decide which breed best fits your lifestyle and circumstances.
Characteristic
Bullmastiff
Saint Bernard
Breed type
Purebred
Purebred
Height
61 – 69 cm
65 – 90 cm
Weight
41 – 59 kg
60 – 100 kg
Life expectancy
8 – 10 years
8 – 10 years
Child friendly
5/5
5/5
Energy level
3/5
3/5
Intelligence
3/5
3/5
Trainability
2/5
3/5
Health
3/5
3/5
Grooming needs
2/5
4/5
Shedding
3/5
5/5
Barking level
3/5
3/5
Aggressiveness
4/5
2/5
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Characteristics
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Saint Bernard
Great with kids
Giant
Summary
About Bullmastiff
Large, powerful guardian originally bred to catch poachers, the Bullmastiff is calm, confident and deeply loyal, often bonding closely with one person. It has a short, low‑maintenance coat, needs space, consistent early training and socialisation to guide its natural protectiveness.
About Saint Bernard
Large, gentle mountain dog developed by Swiss monks for rescue and companionship. Calm and affectionate, especially with children, but very big, drooly, and heavy shedding. Needs moderate exercise, careful joint and health management, and close inclusion in family life.
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