The Bullmastiff is very powerfully built with a short back. The rough coat comes in brindle, fawn, or red, often with black markings on the head. They are a devoted, alert guard dog, with a good-natured temperament. Sometimes they can be a bit willful. Although they are unlikely to attack, they will catch an intruder, knock him down and hold him. At the same time, however, this dog is very tolerant of children and actually craves human attention. They are extremely strong and therefore need a firm master. Make sure and socialize this dog with both people and other dogs at an early age. They will be okay with other pets if they are raised with them. Unfortunately, this dog tends to drool a lot and snore. They are also very sensitive to the tone of your voice. They are not difficult but they do require a handler who can assert authority. They stand around 25-27 inches and weigh a whopping 110 to 135 pounds!