Bullmastiff
Originally a cross between Bulldog and Mastiff and bred to hunt down poachers in the late 19th century, the Bullmastiff is equal parts relaxed homebody and cunning worker when on the job.
Smart, confident, and alert, the American Kennel Club (AKC) calls the breed a “world-class protector.”
Because of their size – they can reach 130 pounds – these dogs should be trained young, while they’re still small enough to handle.
