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The Bullmastiff is a large and devoted breed. A native of England, the Bullmastiff is affectionate and protective of its human family.

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Physical Characteristics
  • Large, hardy build
  • Thickset, large feet
  • Long tail is carried straight or with a slight curve
  • Broad head with dark eyes and black nose
  • V-shaped ears
  • Coat: Short, stubby hair; comes in fawn, red and brindle
  • Height: 24-27 inches
  • Weight: 100-120 pounds
  • Average lifespan: Less than 10 years
  • Affectionate, good-natured, gentle, calm, loyal, smart, devoted, willful
  • Interaction with people: Good with children and familiar people if socialized early
  • Interaction with animals: May be aggressive with other dogs; but good with other pets
  • Training: Owner must establish leadership and authority during early stages
  • Protection: Protective of human family; will chase or block intruders
Medical Conditions
While the listed ailments may be common in this breed, not all members of the breed suffer from these conditions. Responsible breeders screen for orthopedic and genetic diseases.
At Home
  • Not recommended for apartments
  • Not good in extreme climates
  • Easily groomed
  • Light shedder
  • Brush and comb regularly with a firm bristle brush
  • Shampoo only when necessary
Other Facts
  • Called the "gamekeeper's night dog" in the 1800s
  • Reference to the bullmastiff can be found in literature dating back to the early 1900s
  • Developed for great speed
  • "Butkus" from the movie "Rocky" was a bullmastiff
Breed History
  • Originated in the 1800s in England
  • Developed by crossing 60 percent mastiff with 40 percent bulldog
  • Originally used to track and retain poachers encroaching on private land and game reserves
  • Trained to threaten intruders rather than attack
  • Used as a hunting guard and in the army and police forces
  • Used as a watchdog for diamond mining in South Africa
For more information about this breed and breeder referral contacts, please visit the American Bullmastiff Association For breed rescue opportunities, visit ABA Rescue
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