The Bullmastiff is a relatively modern breed that was developed in the mid-19th century, probably around 1860, by English gamekeepers who needed a large, quiet, fearless dog with the speed to track down poachers and the strength to hold them.

They probably experimented with a number of breeds in an attempt to create the perfect dog for their needs, but the one that paid off was the Mastiff/Bulldog cross. The Mastiff was large but not aggressive enough, while the Bulldog, brave and tenacious, lacked the size needed to knock down and hold a man.

The popular cross became known as the Gamekeeper's Night-Dog and worked and lived alongside the gamekeeper and his family. The dogs were bred for utility and temperament with little thought put into looks, the exception being a preference for a dark brindle coat, which provided camouflage at night.

Poaching eventually declined, and the Bullmastiff took on a new role as a guard dog. As a result of the Mastiff influence, the fawn coat with a black mask became more common as well.

It wasn't until the early 20th century that the Bullmastiff began to be bred as a distinct type rather than as a crossbreed.

In 1924, England's Kennel Club recognized the breed. The American Kennel Club followed suit in 1933. The first Bullmastiff registered by the AKC was Fascination of Felons Fear in 1934.

Today the Bullmastiff ranks 40th among the 157 breeds and varieties registered by the AKC, a testament to his qualities as a companion.

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