Is a Bullmastiff right for you?
As a dog lover, you probably know that there are many different types of dogs out there. From the tiny Yorkie to the massive Mastiff, each breed comes with its own unique set of characteristics. Here are 13 interesting facts about this powerful breed that will help you decide if they’re the right fit for you. Watch our About the Bullmastiff video!

The Bullmastiff has ancient
origins in England and Wales through crossbreeding practices between Bulldogs 40% and English Mastiffs 60%. This dog was originally created as a kind of gamekeeper; its primary roles were to catch poachers and keep them away from hunters’ game.
Bullmastiffs are fearless
and make excellent guard dogs. They were bred not be big barkers but to track intruders/poachers and frighten them away or subdue them, thus, they are naturally wary of strangers.
The Bullmastiff makes a great
family dog and works well in home and country situations. This breed has also been used in police work, however, they are sometimes targeted for unwarranted aggression. While aggressive when necessary, this breed is naturally docile.
In Landmark Research on Modern Dog Breed
development, the Bullmastiff has been shown to share the most DNA with an ancestor of the following breeds:
Mastiff
Boerboel
Cane Corso
Bullmastiffs are loyal
watchful, protective and aloof with strangers. They are a territorial breed with a strong sense of who belongs and who does not. The breed standard describes them as “fearless and confident“. If they receive proper training and understand their place in the family hierarchy-they are a joy to own.
According to FCI Breed Standard
the Bullmastiff can reach up to 27 inches in height and up to 130 pounds in weight. Accepted coat colors are:
“Any shade of brindle, fawn or red; colour to be pure and clear. A slight white marking on chest permissible. Other white markings undesirable. Black muzzle essential, toning off towards eyes, with dark markings around eyes contributing to expression.”

Bullmastiff’s require little grooming
and need only an occasional brushing or wipe down with a cloth to keep them looking good year round. They do, however, tend to drool and snore. Being a “flat-faced” breed, the Bullmastiff tends to swallow a lot of air causing flatulence. Their gas can clear the room in no time!
Growing Up Bullmastiff
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The AKC Conducts Dog Racing Trials
each December in Orlando, FL. called the Fast CAT Invitational. This is a 100 yard race where dogs run individually chasing a lure. The average running speed by Bullmastiff’s is about 22 mph. The fastest recorded speed by a Bullmastiff was by a dog named Banshee’s Dream Lover at 27.57 mph!
Are Bullmastiff’s a brachycephalic breed?
There is an argument that the true Bullmastiff is NOT brachycephalic. According to the breed standard, the CORRECT proportion of the muzzle to the skull size does not meet the criteria for brachycephaly. Unfortunately, many breeders do not adhere to this standard, causing health issues in the breed.
The CBARQ Dog Temperament Research
study, conducted at the University of Pennsylvania, is a giant study of over 300 dog breeds and 60,000 individual dogs. In this study, the Bullmastiff ranks 20 out of 124 breeds for aggression towards other UNFAMILIAR dogs. If an unknown dog enters their personal space/territory they are likely to react by barking, growling, bearing of teeth or, in extreme cases, lunging or biting. In contrast, they rank very low for displaying these behaviors for other familiar dogs in the household.
In this Same Research
the Bullmastiff ranks high (41 out of 124 breeds) in prey drive. If a cat, squirrel, rabbit or other small animal crosses their sight, they are very likely to give chase.
Bullmastiff Humor!

In the Landmark Book
entitled, “The Intelligence of Dogs”, professor Stanley Coren researched and documented the intelligence of over 130 different dog breeds. In his book, the Bullmastiff ranks 69th out of 138 breeds in working/obedience intelligence. Essentially this means they will learn new commands in 40 to 80 repetitions and obey first commands 30% of the time or better. This puts them in the “fair working and obedience intelligence” category. In contrast, the most intelligent breeds will learn the same command in 5 repetitions or less!
Bullmastiff’s Have an Average
lifespan of 7-9 years. Some common health conditions that affect this breed include:
Hip and Elbow Dysplasia
Hemangiosarcoma
Gastric Dilation and Volvulus or GDV
Take a Fun Bullmastiff Quiz!
