The english bulldog is a breed with unusually big shoulders and a matching head. An english bulldog is an amazing way to stay in shape and have fun. An adult bulldog can range in size anywhere from 20 to 25 kilograms and are approximately 1.5 feet tall. champion English bulldog stud service. There is no breed of dog better than bulldogs. They are just great with small children due to their docile nature and live about 8 years old depending on who you ask.