I called the Vet yesterday and she said it was odd for a 1 year old Yorkie to be loosing baby teeth, but its still possible. So I am going to take her in just in case, I'd rather be safe then sorry. I kept the tooth, so I was going to bring it with me to the Vets office. I hope it was just baby teeth and nothing wrong. When I took her in the get spayed, they said they took out all of the baby teeth so I guess they might have missed some.