Bullmastiff
Complete Breed Guide
"I’m big, brawny, and ready to battle!"
Quick Facts About Bullmastiffs
Working
100–130 lbs
24–27"
No
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Overview
Nothing is small about Bullmastiffs. Along with their immense size and dominant personalities, they have big hearts and are loyal protectors. They make great guard dogs, but their stubbornness can cause challenges with training and obedience. Show them who’s boss, and they’ll stay by your side through thick and thin.
The Bullmastiff was originally bred in England by crossing the Bulldog with the English Mastiff. Characteristics of both dogs have carried over into this big, strong breed. These dogs are loyal, intelligent, loyal, and courageous. They’re protective of those they love and may be weary of strangers, but they’re more likely to scare them than attack. Bullmastiffs may be stubborn at first, but once they know who’s in charge, they’ll show their obedient and loving side to the entire family. They may even snuggle up right next to you to show off their impressive snoring and drooling.
Temperament and Behavior
The Bullmastiff is a smart, obedient, and loyal dog. They build strong bonds with their families and will protect them against any perceived threats, making them great guard dogs. When they go into defense mode, they’re more likely to bowl over a stranger than attack. Bullmastiffs are often stubborn, which sometimes makes them resistant to obedience training. However, when they learn who’s boss, they’re good at following commands.
Coat & Grooming
Bullmastiffs have short coats that are red, light tan (“fawn”), or reddish-brown (“brindle”) with distinctive dark areas on the muzzle, ears, and eyes. Some dogs also have white fur on their chest. This breed doesn’t shed a lot, so their grooming needs are minimal. They should be brushed once in a while with a rubber brush and bathed only when necessary to get rid of dead hair and dirt.
Lifestyle & Living Conditions
Bullmastiffs can be somewhat dominant toward other dogs in their breed, especially if both Bullmastiffs are male. However, they are good around kids and can get along with pets if they’re socialized at a young age. They wouldn’t do harm intentionally, but because of their size, it’s wise to keep an eye on them around young children and animals. Bullmastiffs don’t do well in the heat or when they’re apart from their families, so it’s better to keep them in a cool indoor setting with a soft bed nearby.
Exercise & Activity
Although Bullmastiffs are big, they don’t require as much exercise as other large working breeds. A moderate amount of exercise, like a long walk or run, should do the trick to keep them fit and happy. Bullmastiffs walk well on a leash, but their size can make them hard to manage. Consistent training can help with their obedience. They may be stubborn, but show them you’re in control and be consistent with your training to improve their behavior.
Characteristics at-a-glance
Ratings are on a scale of 1–10, based on breed standards and typical temperament.
Bullmastiff FAQs
Common questions about the Bullmastiff breed, answered by our editorial team.
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