What is bull mastiff?

135 pounds of short-hair nasty that will cause strangers to shit their pants while at the same time lick the hand of their owner and devour any vermin that walks its way. The PERFECT porch dog! Gets respect at the vet (you KNOW what I mean). Little girls back away, then when you say, "No, it's friendly," smother the dog with huggs. It's why you love dogs in the first place!!