Bullmastiffs 101

Working group

The Bullmastiff is a strong, protective breed that thrives in the hands of those experienced with guardian dogs. They are intelligent, active and devoted to their families, although they're not fond of strangers. And while they love their families, they may be too physical and large to be recommended for families with small children. This is not a breed for beginners, but those who can handle it will enjoy the company of a dog who'll never back down from a threat.

What we love about Bullmastiffs

Giant breed with a strong urge to protect

Energy level
Bark level
  • As needed
Size
24 to 27 inches tall
Lifespan
7 to 9 years
Weight
100 to 130 lbs

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Mature adult Bullmastiff

4 years to 5 years

Risk level for common Bullmastiff conditions

Cruciate ligament tear (knee)

Hypothyroid disease

Skin cancer

Senior Bullmastiff

6+ years

Risk level for common Bullmastiff conditions

Lymphatic cancer

Skin cancer

Splenic cancer

Bullmastiff puppy

0 to 15 months

Risk level for common Bullmastiff conditions

Foreign body ingestion

Gastroenteritis

Ear infection

Young adult Bullmastiff

16 months to 3 years

Risk level for common Bullmastiff conditions

Cruciate ligament tear (knee)

Gastric dilatation and volvulus (GDV)

Ear infection

Mature adult Bullmastiff

4 years to 5 years

Risk level for common Bullmastiff conditions

Cruciate ligament tear (knee)

Hypothyroid disease

Skin cancer

Senior Bullmastiff

6+ years

Risk level for common Bullmastiff conditions

Lymphatic cancer

Skin cancer

Splenic cancer

Bullmastiff puppy

0 to 15 months

Risk level for common Bullmastiff conditions

Foreign body ingestion

Gastroenteritis

Ear infection

Young adult Bullmastiff

16 months to 3 years

Risk level for common Bullmastiff conditions

Cruciate ligament tear (knee)

Gastric dilatation and volvulus (GDV)

Ear infection

2-Bullmastiff laying down GettyImages-1395292284

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3-Fun fact-Bullmastiff GettyImages-157509737

Known as "The Gamekeepers Night Dog," this massive breed was originally a cross between Mastiffs and old-school English Bulldogs.

Bullmastiff coat care and colors

Nothing could be easier. Weekly brushing and regular nail-trims (get them used to it early) take care of most grooming needs. Keep any skin folds clean and dry, and check regularly for odors, irritation or redness.

Bullmastiff exercise & training

Loves walks

Exercise level

The Bullmastiff is more active than some other guardian breeds. Brisk daily walks are a minimum requirement.

Independent study

Trainability

The Bullmastiff is an intelligent breed, developed to assess threat levels and protect their home and family. Early socialization and positive training are essential for this strong and strong-minded breed.

Bullmastiff fun facts

Top girl names for Bullmastiffs

100%

of Bullmastiffs are female

0%

of Bullmastiffs are male

Top boy names for Bullmastiffs

Nationwide loves Bullmastiffs of every name, from Aaron to Zog the Destroyer

Other breeds like Bullmastiffs

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