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.
A bull is an intact adult male of the species Bos taurus. More muscular and aggressive than the female of the species, the cow, the bull has long been an important symbol in many cultures, and plays a significant role in both beef ranching and dairy farming, and in a variety of other cultural activities.