Bullmastiff

Also called Gamekeeper's Night Dog

  • Great with kids

The Bullmastiff is a large and powerful breed of dog that was originally bred in England for guarding and protecting property. They are intelligent, loyal, and protective, and make excellent guard dogs.

Weight
99–130 lb (45–59 kg)
Height at the shoulder
24–27 in (61–69 cm)
Life span
8–10 years
Exercise
About 45 minutes a day
Coat
Short
Origin
England, United Kingdom (19th century)

Traits

Family and friends

  • Children: Good with children
  • Other dogs: OK with other dogs
  • Strangers: Reserved with strangers

Home and activity

  • Energy: Calm
  • Apartment living: Can manage in an apartment
  • Barking: Barks a little
  • Training: Fairly easy to train

Care

  • Grooming: Little grooming
  • Shedding: Sheds a little
  • Drooling: Drools heavily

Temperament

Affectionate Alert Docile Fearless Loyal Protective

Coat colours

Brindle, fawn and red

Males and females

MeasureMalesFemales
Weight 110–130 lb (50–59 kg) 99–119 lb (45–54 kg)
Height 25–27 in (64–69 cm) 24–26 in (61–66 cm)

Recognized by

American Kennel Club (AKC), Fédération Cynologique Internationale (FCI), The Kennel Club (UK) (KC) and United Kennel Club (UKC)


Caring for a Bullmastiff

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Veterinarians

Check-ups and vaccinations through its 8–10 years.

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Dog trainers

Can be stubborn: a trainer helps from the start.

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Pet sitters

Someone to look after it while you’re away.

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Breeds of a similar size

All giant breeds
A Boerboel
Giant

Boerboel

Working Group

  • Weight:110–201 lb (50–91 kg)
  • Life span:10–12 years
A Dogue de Bordeaux
Giant

Dogue de Bordeaux

Working Group

  • Weight:99–154 lb (45–70 kg)
  • Life span:5–8 years

Sources

Breed details from The Dog API (opens in a new tab).