Leonberger
VS
Bullmastiff
Leonberger vs Bullmastiff
Compare Leonberger and Bullmastiff 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
Leonberger
Bullmastiff
Breed type
Purebred
Purebred
Height
65 – 80 cm
61 – 69 cm
Weight
40 – 77 kg
41 – 59 kg
Life expectancy
9 – 10 years
8 – 10 years
Child friendly
5/5
5/5
Energy level
3/5
3/5
Intelligence
3/5
3/5
Trainability
4/5
2/5
Health
2/5
3/5
Grooming needs
3/5
2/5
Shedding
4/5
3/5
Barking level
3/5
3/5
Aggressiveness
2/5
4/5
Characteristics
Leonberger
Great with kids
Easy to train
Giant
Bullmastiff
Great with kids
Low grooming
Protective
Stubborn
Giant
Summary
About Leonberger
Large, strongly built “gentle giant” with lion‑coloured, water‑resistant double coat and black mask. Typically calm, devoted, and very good with children and other pets when well socialised. Needs regular exercise, kind training, thorough grooming, and careful health management.
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.
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