Bulldog vs Bullmastiff
How does the Bulldog compare to the Bullmastiff? 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 households, urban environments)
- Domestic, Urban and Suburban Environments
- Diet
- Omnivore
- Omnivore
- Conservation status
- Least Concern
- Least Concern
- Lifespan
- 8-10 years
- 7-10 years
- Weight
- 18-23 kg (40-50 lbs)
- 45-59 kg (100-130 lbs)
Bulldog vs Bullmastiff: who would win?

Bulldog
18-23 kg (40-50 lbs)

Bullmastiff
45-59 kg (100-130 lbs)
Bullmastiff wins moderate confidence
Bullmastiff is substantially heavier (45-59 kg (100-130 lbs) vs 18-23 kg (40-50 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 have a omnivore diet.
- Both are listed as Least Concern.
Differences
- Habitat: Domestic (human households, urban environments) vs Domestic, Urban and Suburban Environments.
- Weight: 18-23 kg (40-50 lbs) vs 45-59 kg (100-130 lbs).
Bulldog vs Bullmastiff: FAQ
Who would win in a fight, a Bulldog or a Bullmastiff?
Bullmastiff wins. Bullmastiff is substantially heavier (45-59 kg (100-130 lbs) vs 18-23 kg (40-50 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 Bulldog and a Bullmastiff?
Bulldog and Bullmastiff differ in several ways — habitat: domestic (human households, urban environments) vs domestic, urban and suburban environments. weight: 18-23 kg (40-50 lbs) vs 45-59 kg (100-130 lbs).
Do Bulldog and Bullmastiff live in the same habitat?
No — Bulldog lives in domestic (human households, urban environments), while Bullmastiff is found in domestic, urban and suburban environments.
What do Bulldog and Bullmastiff eat?
Both Bulldog and Bullmastiff have a omnivore diet.
Which is more endangered, the Bulldog or the Bullmastiff?
Bulldog is listed as Least Concern, while Bullmastiff is listed as Least Concern.
How big are Bulldog and Bullmastiff?
Bulldog weighs around 18-23 kg (40-50 lbs), while Bullmastiff weighs around 45-59 kg (100-130 lbs).

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Bulldog

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Bullmastiff







