Working Group

Breed History: The Bullmastiff was developed in 1860 from the Mastiff and the Bulldog in Great Britain. It was bred to catch and hold poachers without hurting them. Breeders believed the cross created a dog that was fast but not aggressive. According to fanciers, the breed is more Mastiff than Bulldog.

Breed Description: The Bullmastiff is a large and powerful dog with a large, broad head and a short, blunt muzzle. When alert, the forehead wrinkles. The eyes are dark and nose is black. The medium-size, triangular drop ears are set wide apart. This dog has a broad, deep chest and muscular loins, with a long tail that may be curved or straight. The short, smooth coat is brindle, fawn, or red, with a dark muzzle and ears. There may be a small, white spot on the chest. Bullmastiffs are 24 to 27 inches tall and weigh 100 to 130 pounds.

Breed Temperament: This is a quiet, docile dog that is patient and gentle with friends and family, especially children. It can, however, be protective and territorial.

Energy Level: Low

Notes:  The Bullmastiff does well with a family and can adjust to most living situations but may be too large for apartment life. They require socialization and training.

Health Concerns: Bloat, eye problems, cardiac disease, hip dysplasia, hypothyroidism, kidney problems, panosteitis, and tumors.