Hello,
Thank you for sending your question to Just Answer!
I have just a few questions to ask you so that I may answer your question accurately.
Is there a possibility that someone (proably a child) that kicked the dog?
Could he have fallen off the couch or chair?
How big is your Yorkie?
Let me know, and I will reply right away with information to your question. I have a Yorkie, weighing in at a "whopping" 3lb, 1oz. and I have had a similar situattion.
I will await your reply, thank you, Tammy
