My daughter just got a yorkie puppy too and is sick. Coughing, went to vet 3 x's on an antibiotic, thought she was clearing up and now is coughing worse and we are going back to vets AGAIN! I have 3 yorkies and hae never experienced this, but this little one is very sick. My daughter takes her to her apartment, her boyfriends, and my house, and I think it's too much shifting around. She was almost cleared up at my house, and now is sick again. She also had a parasite. Poor thing. She is eating and drinking ok, eating Canidae Life stages food. I'll keep in touch after vet visit today. If you want to call me, I'll give you my number.