Leonberger
VS
Mastiff
Leonberger vs Mastiff
Compare Leonberger and Mastiff 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
Mastiff
Breed type
Purebred
Purebred
Height
65 – 80 cm
70 – 91 cm
Weight
40 – 77 kg
75 – 110 kg
Life expectancy
9 – 10 years
10 – 12 years
Child friendly
5/5
3/5
Energy level
3/5
3/5
Intelligence
3/5
4/5
Trainability
4/5
3/5
Health
2/5
2/5
Grooming needs
3/5
3/5
Shedding
4/5
3/5
Barking level
3/5
3/5
Aggressiveness
2/5
2/5
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Characteristics
Leonberger
Great with kids
Easy to train
Giant
Mastiff
Super smart
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 Mastiff
The Mastiff is a giant, heavily built guardian dog, calm and dignified yet deeply devoted to its family. It is watchful rather than aggressive, needs gentle, consistent training, moderate exercise, and space. Its short coat is easy to maintain, but drool, health care, and costs are significant.
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