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208 Breeds, 422 Health Conditions  |  Find a Vet

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Bullmastiff Facts

  • Group
  • Working
  • Affiliations
  • Height
  • 24" - 27"
  • Weight
  • 100-130 lbs.
  • Lifespan
  • 8 years | Add yours

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  • Exercise Requirement
  • Low - This breed requires little daily activity
  • Training Requirement
  • Average Training Time
  • Grooming Requirement
  • Easy
  • Colors
    • Black / Brindle
    • Brindle
    • Red-Brindle
    • Fawn
    • Red
  • Breed Characteristics
    • Can be trained as a watch dog or guard dog
    • Can be trained for defense
    • Good with children
    • Should sleep indoors

True Cost Of Ownership

Alternate Names

none known


The Bullmastiff was created in Great Britain.

Date Of Origin

This breed was developed in 1860.


The Bullmastiff was bread from a Mastiff and a Bulldog. It was used to catch and hold poachers without hurting them. Breeders believed the cross created a dog that was fast but not aggressive.


The Bullmastiff is a large and powerful dog with a large, broad head and short, blunt muzzle. When alert, the forehead wrinkles. The eyes are dark and nose is black. The medium size, triangular drop ears are set wide apart. This dog has a broad, deep chest and muscular loins, with a long tail that may be curved or straight. There is a short smooth coat.


This is a quiet, docile dog that is patient and gentle with friends and family, especially children. It can, however, be protective and territorial.


It has been prized as a hunting guard, as an aid in army and police work, and is used as a watch dog by the Diamond Society of South Africa. It is mainly used today as a most frighteningly watchdog and body guard. It enjoys living with the family.

Health Concerns

Bloat, eye problems. cardiac disease, hip dysplasia, hypothyroidism, kidney problems, panosteitis tumors.

Additional Information

This breed has a tendency to become over weight easily so be sure to provide a balanced diet and lots of exercise.

Show Sources & Contributors +


The Howell Book Of Dogs

Publisher: Wiley Publishing Inc, 2007

Website: http://www.wiley.com/WileyCDA/

Author: Liz Palika

Dog Bible

Publisher: BowTie Press, 2005

Website: http://www.bowtiepress.com/bowtie/

Authors: Kristin Meuh-Roe, Jarelle S. Stein

Simon & Schusters Guide to Dogs

Publisher: Simon & Schuster inc, 1980

Website: http://www.simonandschuster.com

Author: Elizabeth Meriwether Schuler

The New Encyclopedia of the Dog

Publisher: Dorling Kindersley Publishing, 2000

Website: http://www.dk.com

Author: Bruce Fogle


Publisher: WikiMedia Foundation, On Going

Website: http://en.wikipedia.org/

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