american bull dogs only live for 12-15 years if you takecare of your dog longer by feeding with good only dogs foods and taking for working and jogging everyday then they can live longer almost 12-15 years. but shouldnt not give or feed the dog any humans tables foods because the human foods we buy and eats always have made of sugar and fat, greasing over cooked foods arent not good for dogs to have. the foods can harm and kill animals or make them become unhealthy and loose weight .you know that pets can get cancers like humans usually get if they dont takcare of themselve very well. some times can get heart disease or lung cancer, or evenly loose a leg or arm, eyes, or go blinded. dogs can be alike that .so dogs foods arent made with sweets or sugar only water,oil,sometimes flower oils, flour or soys. grains wheats. but not sugars can kill the dogs. .so here are more information your dog. is american bulldog height is 20-28inches and weight about 60-120lbs and come from USA. the breed usually used as working dog on farms,hunter,guard dog,which exhibits intelligence, determination ,and protectiveness. and generally lively and affectionate .but is instinctively exhibit aggression toward other animals,and strangers,and requires a great deal of exercise if it is to remain content.