Yorkies most definitely smile! I think that is one of the most endearing qualities they have. This is a picture of Mayzie when she was little. She just woke up from a nap in her stroller and was apparently very happy!

I took two really good shots. This one and another that is featured on the October page of the YT calendar!
My first yorkie (RIP) would smile on command. Mayzie smiles a lot but it's on her terms. lol