The Bullmastiff is a strong and powerful dog in the Working Group. The Bullmastiff was recognized by the AKC in the year 1934 and approved in the year 1992. The average Bullmastiff stands 24 to 27 inches tall at the shoulders and weighs between 100 and 130 pounds.
The Bullmastiff dog breed is courageous, loyal, calm, and loving with those it knows. It has a very strong protective instinct and will defend its owners against anything it perceives as a threat. However, Bullmastiffs do not normally attack to protect. Instead, it simply knocks the intruder over with its massive size and pins them to the ground, or, will simply stand in front of the stranger/intruder and refuse to let them pass.