Dogs sure can be funny about clothes. My first Yorkie hated them, and would freeze up on walks if I put even a light shirt on him in the cold or rain. My current guys love their warm coats when it's cold. I think it comes down to a training issue, if you really want your Yorkie to wear clothes in doors and they decide it's not for them! I prefer the natural fur look, since Yorkies are so adorably cute, especially with a good old fashioned pet cut, IMO, why cover them up?