The Bullmastiff is a good-natured, calm, and affectionate breed. Devoted to their families and typically docile, Bullmastiffs are very protective and alert. Bullmastiffs have square, wrinkled muzzles with dark noses, eyes, and ears. They have a short, straight coat that comes in a range of colors, including brindle, red-brown, and fawn. While Bullmastiffs do make good guard dogs, they're also gentle giants. The Bullmastiff is an English breed of dog of mastiff type and large size, with a solid build and a short muzzle. It was developed as a guard dog in the nineteenth century by cross-breeding the English Mastiff with the now-extinct Old English Bulldog. It was recognised as a breed by The Kennel Club in 1924. The bullmastiff is low maintenance, and does not require much exercise or grooming. He can live happily in a big back yard or a small apartment. He doesn't bark much as he was bred to be silent and stealthy. Their generally calm, easy-going natures make them good dogs for families with reasonably well-behaved children.