The Boston Terrier is a breed of dog originating in the United States of America. The AKC says they are highly intelligent and very easily trained. They are friendly and can be stubborn at times. The average life span of a Boston is around 11 to 13 years, though some can live up to around 18 years. They have a short nose, which can often cause breathing problems later in life, which is what leads to a low life expectancy. Hooper's Judge is directly related to the original bull and terrier breeds of the 19th and early 20th centuries. The American Kennel Club cites Hooper's Judge as the ancestor of all true modern Boston Terriers. Generally, Boston Terriers' tails do not exceed two inches in length.