Bullmastiff Breed Information

Bullmastiff breedinfo NewDoggy.com


The Bull Mastiff is a big, British breed, with a surprisingly sensitive and intelligent nature. The Bull Mastiff can be affectionate and gentle, even with children, and is incredibly loyal. They are truly fearless when it comes to protecting their family. Young Bull Mastiffs can be a bit rough and rowdy, but they mellow with age to become wonderful, if occasionally stubborn, pets.

Bullmastiff breed attributes

About Bullmastiff breed


The Bullmastiff is big and powerfully built, but not very bulky. The head is broad and large, with a wrinkled face and flat forehead. They have dark eyes (typically brown or hazel). The Bullmastiff’s nose is black, with large nostrils, and its lower jaw is undershot. The ears are set high on the head, and flop down to the cheeks. The tail is tapered, and the back is short but straight.

Origin: England


The Bullmastiff’s coat is short but dense, with a slightly rough texture. They are easy to groom and don’t shed heavily. The coat can be red ,fawn, or brindle, and sometimes the Bullmastiff has a white patch on the chest, and a black mask on the face. The ears are also darker than the rest of the body.


The Bullmastiff is generally a healthy breed; however they are prone to a few health conditions:

  • Hip dysplasia
  • Elbow dysplasia
  • Entropion
  • Hypothyroidism
  • Bloat
  • Cystinuria
  • Subaortic Stenosis
  • Ruptured Anterior Cruciate Ligament
  • Skin Problems
  • Panosteitis
  • Cancer

At Newdoggy.com we promote reputable breeders, who use genetic testing and good breeding practices to remove genetic conditions from their breeding lines. Newdoggy.com’s Health Guarantee certifies that all promoted puppies are in good health.


The big strong Bullmastiff is a sensitive and intelligent dog. They need firm and consistent training: be sure to teach them not to pull on the lead (your shoulders with thank you!). When training a Bullmastiff, you should not speak harshly, as they are sensitive to your tone of voice. A calm but confident tone is just right. Bullmastiffs can be stubborn, but obedience training can help you to bring out their better qualities.


The Bullmastiff is a loyal breed, and is generally very good-natured. They are affectionate and gentle with family members, including children, though often more reserved with strangers. Bullmastiffs are fearless: they have been used as highly effective guard dogs, and are capable of tackling and pinning an intruder with ease. You will need to start training and socialisation from an early age to prevent your Bullmastiff tackling people in an attempt to defend you. They can be stubborn, but respond well to consistency in training. They can be aggressive with dogs of the same sex or with strange animals.

Living with

Be warned: the Bullmastiff is prone to both drooling and flatulence! Young Bullmastiffs can be quite rowdy, though fortunately they mellow as they age. An adult Bullmastiff is usually so calm that it can be left alone at home. Don’t leave them alone for too long, as they may become become and destructive. Bullmastiffs even do well in apartments (though they do take up a lot of space, so maybe not the best choice for a small apartment).  Be aware that this breed is sensitive to heat: keep your Bullmastiff inside on hot days!

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