Dandy, Jamie’s dog, is a Boston terrier. The Boston Terrier is a breed of dog originating in the United States. Bostons are small and compact with a short tail and erect ears. 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 well into their teens.