I have a wonderful Yorkie whose name is Trapper. He has been loving and affectionate towards me until recently. I am not sure what is the cause but it may be that he has had some health problems and he has been seeing the Vet lately, which he hates. Anyway, since my last visit with the Vet, which was Thursday, Trapper has on and off barked at me and tried to nip me. It's as if he is going through some sort of spell. He also hasn't wanted to eat, which is also a problem because I have to give him medication twice a day. I don't know what to do? Can you help me! By the way it is just me and my Trapper.