A gentle giant, the Bullmastiff is an expert hunter with a low inclination for aggression. That's because this animal was specifically bred not to bite. Instead, the Bullmastiff was bred to use its weight and agility to overpower a person or game animal, pinning it down until help arrives. But don't let the tough exterior fool you -- the Bullmastiff is a softie on the inside. Extremely eager to please, this is a wonderful choice for family guard dog.
Despite its strength and physical abilities, the Bullmastiff does not require much exercise. It is also a low maintenance dog in terms of grooming, which makes it a good choice for a family that wants a guard dog but doesn't want to put forth a lot of effort.
Another good quality of Bullmastiffs is that they don't tend to bark much. Silence was a virtue when they were originally used to guard estates so they could sneak up on predators. But that doesn't mean they're asleep on the job. This animal has excellent guarding skills -- he just doesn't like to make a big fuss about it.