The Bullmastiff, a cross between the Old English Bulldog and the English Mastiff is a powerful breed. It was originally bred in the 1800s to tackle poachers, and its size is a reflection of that.

The Bullmastiff is generally 24 to 27 inches tall and weighs 100 to 140 pounds. Its coat should be a single, pure color, generally fawn or red. The muzzle of the breed is black with dark markings continuing around the eyes.

The breed is calm and loving, yet very protective of its owners. It uses its size as a defense, generally knocking over or blocking anything it perceives as a threat. Because of this, it is necessary to socialize the breed early.

The Bullmastiff is prone to several diseases which include: hip dysplasia, elbow dysplasia, entropion, hypothyroidism, lymphoma cancer, and progressive retinal atrophy.