The Boston Terrier is a breed of dog originating in the United States of America. This 'American Gentleman' was accepted in 1893 by the American Kennel Club as a non-sporting breed. According to international breed standards, the dog should weigh no more than 25 pounds (11 kg). Boston Terriers usually stand up to 15-17 inches at the withers.The American Kennel Club divides the breed into three classes: under 15 pounds, 15 pounds and under 20 pounds, 20 pounds and not exceeding 25 pounds. Boston Terriers usually stand up to 15-17 inches at the withers.The American Kennel Club divides the breed into three classes: under 15 pounds, 15 pounds and under 20 pounds, 20 pounds and not exceeding 25 pounds. A Boston Terrier energy level according the American Kennel Club is moderate. A brisk walk two times per day would give your Boston the exercise it needs. However, each Boston is different so some may require a little more exercise than others.