chronÂ·oÂ·biÂ·olÂ·oÂ·gy. n. The study of the effects of time and rhythmical phenomena on life processes. chronâ²oÂ·biÂ·oÂ·logâ²ic (-É-lÅjâ²Ä­k) , chronâ²oÂ·biÂ·oÂ·logâ²iÂ·cal (-Ä­-kÉl) adj.
This breed is currently only recognized by five breed clubs. The American bully is a short, stocky dog with a large head and wide chest. This pitbull-type breed reaches a height of 18 to 21 inches in males, 17 to 20 inches in females and a weight of 70 to 120 pounds.There are five categories of American bully according to body type and height and weigh varies greatly.his breed is currently only recognized by five breed clubs. The American bully is a short, stocky dog with a large head and wide chest. This pitbull-type breed reaches a height of 18 to 21 inches in males, 17 to 20 inches in females and a weight of 70 to 120 pounds.
Remember a Bullmastiff is not going to be as large as a Mastiff or Great Dane. Under no circumstances should you expect your Bullmastiff (if he/she is indeed a purebred Bullmastiff) to weigh much more than 130 -140 lbs for males and 110-120 lbs for females.