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Bull Mastiffs

Find some great facts about this breed. Learn about the average
height & weight, the typical colorings & temperaments, plus information
about their activity level, age expectancy, typical health concerns & more!

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Bull Mastiff

All About Bull Mastiffs

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Average Height & Weight

The Bull Mastiff is considered an EXTRA LARGE dog based on the average height and weight.


Males – Height: 25 to 27 inches.

Weight: 110 to 130 pounds.

Females – Height: 24 to 26 inches.

Weight: 100 to 120 pounds.

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Bull Mastiff


Typical Coloring

Bull Mastiffs are commonly red, fawn and brindle.





Bull Mastiffs are smart, obedient dogs whose reliability makes them ideal for therapy, pulling carts and other work situations. Though the breed is fearless and confident, it nonetheless heeds to its master’s commands and has a sweet, surprisingly docile personality, considering its large size.




Activity Level

Bull Mastiffs are a low-energy breed, but they still need daily exercise so they do not put on weight. A daily walk or short romp outside is enough activity each day.


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Breed Characteristics



Age Expectancy

8 to 10 years

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Known Breed-Related Health Issues

The most common health concerns for Bull Mastiffs include gastric torsion, canine hip dysplasia and elbow dysplasia. Entropion is less common but still occurs within the breed, while progressive retinal atrophy is seen occasionally.




Ideal Climates for this Breed

Bull Mastiffs have a low tolerance for hot climates and a medium tolerance for cold climates.



Bull Mastiff


Family Orientation
(good with kids, or other pets?)

Bull Mastiffs make good companions for certain families. They are not playful dogs, and that may disappoint children who want a playmate, though the breed is very friendly toward kids. Bull Mastiffs can also be aggressive toward other dogs, though they are friendly toward other household pets.





Fun Facts  


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