I have two BoChi's. The boy looks more like a Chihuhua while the girl favors the Boston Terrier. The boy is calmer and a big snuggler while the girl is a fetch maniac and will run until she gets exhausted, which takes a while. They're very sweet but they do bark quite a bit when people come to the door. They were an accident from when one couple who owned a female Boston Terrier and they had been baby-sitting their mom's Chihuahua. They're the best accident I've ever heard of :-)