The english bulldog is a type of dog with unusually big shoulders and a matching head. A bulldog is an amazing way to stay in shape and enjoy life. An adult english bulldog can vary in size anywhere from 20 to 25 KGs and are approximately a foot and a half tall. english bulldog stud service. There is no breed of dog better than bulldogs. Bulldogs are amazing with kids due to their docile nature and live to be about 9 years old depending on who you ask.