Large, strong, and loyal, the Bullmastiff is a quintessential guard dog. The breed was developed in England around 1860 to guard estates and to protect game preserves from poachers. To perform these roles, a dog would need to track, find, and safely pin down poachers. In hopes of creating a dog more aggressive and faster than the Mastiff but larger and less aggressive than the English Bulldog, breeders made the original breeding 60 percent Mastiff and 40 percent Bulldog. The combination worked beautifully, producing a breed of dependable family guard dogs. Though a fearless guard dog, the Bullmastiff remains gentle and loving with his family. And since these dogs were bred specifically to guard people’s homes, they bark only rarely.
Bullmastiffs excel at agility, obedience, tracking, conformation, therapy work, and carting.