Mastiff
VS
Newfoundland
Mastiff vs Newfoundland
Compare Mastiff and Newfoundland 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
Newfoundland
Breed type
Purebred
Purebred
Height
70 – 91 cm
65 – 71 cm
Weight
75 – 110 kg
52 – 68 kg
Life expectancy
10 – 12 years
8 – 10 years
Child friendly
3/5
5/5
Energy level
3/5
3/5
Intelligence
4/5
4/5
Trainability
3/5
4/5
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
2/5
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Characteristics
Mastiff
Super smart
Giant
Newfoundland
Great with kids
Super smart
Easy to train
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 Newfoundland
The Newfoundland is a giant, water‑loving working dog with a dense, heavy‑shedding coat and notable drooling. Calm, loyal, and gentle with children, it needs close family contact, kind training, moderate exercise, careful grooming, space, and proactive health care for joints, heart, and bloat.
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