The no-shedding aspect of the breed as well as the cuteness factor! I think Yorkie puppies are the cutest. The small size is good for us too - and that they are quite smart. I did research online and when I read that Chihuahuas were ranked so much lower than Yorkies (I was thinking about a Yorkie-Chihuahua mix at the time) I decided for a 100% Yorkie. Very glad I did, I just love my little dog.