Bullmastiff
giant breed
Medium activity
Average lifespan: 8 years
About the Bullmastiff
Developed in 19th-century England by crossing Mastiffs with Bulldogs, originally bred by gamekeepers to track and hold poachers. Large and powerfully built, with a short, dense coat and a broad, wrinkled head.
Temperament
Calm, loyal, and protective, the Bullmastiff is a devoted family guardian that is typically gentle at home but naturally wary of unfamiliar people.
Common health issues
- Hip dysplasia
- Elbow dysplasia
- Bloat / gastric dilatation-volvulus (GDV)
- Osteosarcoma
Grooming needs
The short, dense coat sheds moderately and needs only weekly brushing, along with regular cleaning of facial wrinkles.
This information is general and educational — it isn't a substitute for advice from your veterinarian,
who knows your individual dog's health history.
Related giant breeds
Curious how a different size category ages?
Compare other sizes →