Skip to content
Caninpedia

Bullmastiff vs Mastiff

Share
Photo of the Bullmastiff dog breed
BullmastiffPhoto: Fausto Moreno — CC BY-SA 3.0 (source)
Photo of the Mastiff dog breed
MastiffPhoto: Radovan Rohovsky — CC BY-SA 3.0 (source)

Side by side

Comparison of Bullmastiff and Mastiff
TraitBullmastiffMastiff
GroupPinschers, molossers and mountain dogsPinschers, molossers and mountain dogs
SizeLargeGiant
Weight41–59 kg70–100 kg
Height at withers61–69 cm70–85 cm
Life expectancy8–10 years6–10 years
Energy
With children
With other dogs
Trainability
Grooming needs
Shedding
Heat tolerance
ApartmentNot recommendedNot recommended

Key differences

  • Heavier: Mastiff (about 85 kg vs 50 kg on average)
  • Taller: Mastiff (about 77.5 cm vs 65 cm on average)

Gaps counted as key differences: more than 20% in average weight, more than 10% in average height, at least 2 years in average life expectancy, or at least 2 points on a rating.

Which one is right for you?

A quick guide based on the ratings above. Every dog is an individual: spend time with the breed and talk to breeders, rescue organisations or a veterinarian before deciding.

Apartment living
Both are similarBased on apartment suitability and energy.
Family with children
Both are similarBased on behaviour with children.
First-time owner
Both are similarBased on trainability, energy and grooming needs.
Hot climate
Both are similarBased on heat tolerance.
Active owner
Both are similarBased on energy level.

Meet the two breeds

Mastiff

One of the heaviest dogs in the world, the Mastiff is a calm, dignified giant that is very gentle with its family.

Read the full Mastiff profile

Other comparisons