Looks Yorkie to me The vet shouldn't have said that about the breed. I don't see anything that suggests your dog is a mix. May not be healthy and she looks like she feels under the weather but again vet should not have put in your mind you may have got a mix based on how your dog looks now.
I don't know for sure what you mean by a toy yorkie. I thought they were all in toys. If you mean one of those very tiny 2 pound adults I would feel very happy if I were you if your guy gets bigger. Breeders aren't suppose to be breeding for tiny tiny. Standard says up to 7 pounds i believe but I wish they'd add something about them having to be over 3-4 pounds too.
good luck |