Dog Breeds: Bullmastiff temperament and personality

bullmastiff dog

The Bullmastiff dog

The Bullmastiff dog is a large-sized dog with a strong solid build and short muzzle. He is a guard dog, filled with character and steadfast.  He is a loving dog when it comes to family.


The breed was developed in the 19th century, probably around 1860.  English gamekeepers needed to develop a dog that could track down poachers and hold them strongly.   To achieve this, they combined the toughness and aggressiveness of a Bulldog and the length of the Mastiff.

The Bullmastiff dog is therefore known as the Gamekeeper’s Night Dog.  As poaching decreased, the Bullmastiff moved on to become a guardian dog.  In the 20th century, it was recognized as its own kind instead of a crossbreed.  The AKC deemed it a breed in 1934

Physical Characteristics

Males can reach a height of 25-27 inches and weight 110-130 pounds.  Females are about 24-26 inches high with a weight of 100-120 pounds.

The only accepted coat colors are red, fawn, or brindle.  These colors may vary in tone.


This dog is smart, reliable, and obedient.  He is a guardian dog and will respond aggressively to defend his family.  They have a very calm nature so it is unlikely for them to bark.

Caring for a Bullmastiff dog

A Bullmastiff dog can do well in a fenced house. He does not require much exercise as he is a low-energy dog. However, he could use some short walks.

Avoid strenuous exercise during hot and humid days since he can suffer a heat stroke.  Make sure he has access to water and shade when he is outside.


Training is imperative at a very young age.  You should start training him on the very first day you bring him home. It will be a lot more difficult when he is a bigger size.  You have to be a confident trainer since this dog has a mind of itself.

If properly trained, the Bullmastiff is a loyal dog who would more than willingly put down his life for yours.

Fun facts

  • They have no problem at being left alone in the house for long periods of time.
  • Bullmastiffs shed very little and require very little grooming.
  • They drool and gas a lot.  Consider this before adopting one.
  • The Bullmastiff has a pretty wide pain threshold, so it could be difficult to know if he has been seriously hurt.

Here in Dogalize  you will find useful information about other breeds.  You will also find everything you need to know about your best friend.