Mastiff
VS
Great Pyrenees
Mastiff vs Great Pyrenees
Compare Mastiff and Great Pyrenees 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
Mastiff
Great Pyrenees
Breed type
Purebred
Purebred
Height
70 – 91 cm
65 – 80 cm
Weight
75 – 110 kg
34 – 60 kg
Life expectancy
10 – 12 years
10 – 12 years
Child friendly
3/5
5/5
Energy level
3/5
3/5
Intelligence
4/5
4/5
Trainability
3/5
3/5
Health
2/5
2/5
Grooming needs
3/5
4/5
Shedding
3/5
5/5
Barking level
3/5
3/5
Aggressiveness
2/5
3/5
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Characteristics
Mastiff
Super smart
Giant
Great Pyrenees
Great with kids
Super smart
Giant
Summary
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.
About Great Pyrenees
Large, calm livestock guardian from the Pyrenees, the Great Pyrenees is a powerful white, heavy‑shedding dog with a thick coat and double dewclaws. Gentle yet strongly protective, it needs secure fencing, steady socialization, mental stimulation, and experienced, patient handling.
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