Mckenzie was born on march 18th 2009. Me & my boyfriend took him home on may 12th and he was toilet trained in less than 2 weeks. His ears finally stood up on their own at the age of about 13-14 weeks so now he has the boston ears. The back end is the only jack russell part i can see in him. Hes extremley lively and one hell of a handful but he is absolutely adorable at the same time.