Neapolitan Mastiff vs Newfoundland Dog
How does the Neapolitan Mastiff compare to the Newfoundland Dog? They are both members of the Canidae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.


Side-by-side comparison
- Scientific name
- Canis lupus familiaris
- Canis lupus familiaris
- Classification
- Mammal
- Mammal
- Family
- Canidae
- Canidae
- Habitat
- Domestic (Human environments)
- Domestic
- Diet
- Carnivore
- Omnivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 7-9 years
- 8-10 years
- Weight
- 50–70 kg (110–154 lbs)
- 100–150 lbs (45–68 kg)
Neapolitan Mastiff vs Newfoundland Dog: who would win?

Neapolitan Mastiff
50–70 kg (110–154 lbs)

Newfoundland Dog
100–150 lbs (45–68 kg)
Newfoundland Dog wins moderate confidence
Newfoundland Dog is substantially heavier (100–150 lbs (45–68 kg) vs 50–70 kg (110–154 lbs)). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
Similarities
- Both are mammals.
- Both belong to the Canidae family.
- Both are listed as Least Concern.
Differences
- Habitat: Domestic (Human environments) vs Domestic.
- Diet: carnivore vs omnivore.
- Weight: 50–70 kg (110–154 lbs) vs 100–150 lbs (45–68 kg).
Neapolitan Mastiff vs Newfoundland Dog: FAQ
Who would win in a fight, a Neapolitan Mastiff or a Newfoundland Dog?
Newfoundland Dog wins. Newfoundland Dog is substantially heavier (100–150 lbs (45–68 kg) vs 50–70 kg (110–154 lbs)). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
What is the difference between a Neapolitan Mastiff and a Newfoundland Dog?
Neapolitan Mastiff and Newfoundland Dog differ in several ways — habitat: domestic (human environments) vs domestic. diet: carnivore vs omnivore. weight: 50–70 kg (110–154 lbs) vs 100–150 lbs (45–68 kg).
Do Neapolitan Mastiff and Newfoundland Dog live in the same habitat?
No — Neapolitan Mastiff lives in domestic (human environments), while Newfoundland Dog is found in domestic.
What do Neapolitan Mastiff and Newfoundland Dog eat?
Neapolitan Mastiff has a carnivore diet, while Newfoundland Dog has a omnivore diet.
Which is more endangered, the Neapolitan Mastiff or the Newfoundland Dog?
Neapolitan Mastiff is listed as Least Concern, while Newfoundland Dog is listed as Least Concern.
How big are Neapolitan Mastiff and Newfoundland Dog?
Neapolitan Mastiff weighs around 50–70 kg (110–154 lbs), while Newfoundland Dog weighs around 100–150 lbs (45–68 kg).

Full profile
Neapolitan Mastiff

Full profile
Newfoundland Dog







