bullmastiff breed information


The Bullmastiff originated around 1860 in England, where it was developed to keep large English estates free of poachers. Sixty percent Mastiff and 40 percent Bulldog, the Bullmastiff was bred to be faster than the Mastiff, but bigger than the Bulldog.

The Bullmastiff is docile and sweet, despite its imposing appearance. It is a natural guard dog, and makes an otherwise nice household companion. Ranging in size from 100 to 130 pounds, this large breed dog can be quite independent in its thinking. For this reason, early socialization and obedience training are especially recommended in this breed.

Although they make nice household companions, Bullmastiffs are nonetheless prone to hereditary and congenital conditions that can adversely affect their health – not to mention your family budget. Some of the conditions and illnesses Bullmastiffs are prone to include eye problems such as entropion and retinal dysplasia; joint issues such as hip and elbow dysplasia; neurological diseases such as cerebellar abiotrophy; and skeletal disorders such as cervical vertebral instability (wobbler syndrome).

Thankfully, Petplan pet insurance covers all hereditary and chronic conditions as standard. Which means if your Bullmastiff has the misfortune of inheriting his father’s bad hips or his mother’s weak limbs, you’re covered.

Common health issues

Use the condition checker tool to learn what common conditions your pet may have.

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