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.

Nationwide Outline Icons Vibrant Blue Heart 24x24pxWhat we love about Bullmastiffs

Giant breed with a strong urge to protect

Energy level
Energy LevelEnergy Level
Bark level
  • bark-very-vocalVery vocal
  • bark-talkativeTalkative
  • bark-as-neededAs needed
Size
24 to 27 inches tall
Group Size X large

We want to see pictures of your Bullmastiff!

Tag @NationwidePet on social media!

My pet’s health plannerSM

Mature adult Bullmastiff

4 years to 5 years

Risk level for common Bullmastiff conditions

risk-level-bar

Cruciate ligament tear (knee)

risk-level-bar

Hypothyroid disease

risk-level-bar

Skin cancer

Senior Bullmastiff

6+ years

Risk level for common Bullmastiff conditions

risk-level-bar

Lymphatic cancer

risk-level-bar

Skin cancer

risk-level-bar

Splenic cancer

Bullmastiff puppy

0 to 15 months

Risk level for common Bullmastiff conditions

risk-level-bar

Foreign body ingestion

risk-level-bar

Gastroenteritis

risk-level-bar

Ear infection

Young adult Bullmastiff

16 months to 3 years

Risk level for common Bullmastiff conditions

risk-level-bar

Cruciate ligament tear (knee)

risk-level-bar

Gastric dilatation and volvulus (GDV)

risk-level-bar

Ear infection

Mature adult Bullmastiff

4 years to 5 years

Risk level for common Bullmastiff conditions

risk-level-bar

Cruciate ligament tear (knee)

risk-level-bar

Hypothyroid disease

risk-level-bar

Skin cancer

Senior Bullmastiff

6+ years

Risk level for common Bullmastiff conditions

risk-level-bar

Lymphatic cancer

risk-level-bar

Skin cancer

risk-level-bar

Splenic cancer

Bullmastiff puppy

0 to 15 months

Risk level for common Bullmastiff conditions

risk-level-bar

Foreign body ingestion

risk-level-bar

Gastroenteritis

risk-level-bar

Ear infection

Young adult Bullmastiff

16 months to 3 years

Risk level for common Bullmastiff conditions

risk-level-bar

Cruciate ligament tear (knee)

risk-level-bar

Gastric dilatation and volvulus (GDV)

risk-level-bar

Ear infection

2-Bullmastiff laying down GettyImages-1395292284

Nationwide can help you save on your Bullmastiff's health care no matter what lifestage they’re in.

Get your Bullmastiff’s health information in a free report

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

Top boy names for Bullmastiffs

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

Other breeds like Bullmastiffs

Best. Bullmastiff insurance. Ever.SM

  • Pet insurance premiums starting at $25/mo.
  • Visit any licensed veterinarian, anywhere
  • Cancel at any time, risk-free