I have an old cat who will not eat. When he does eat, he is either puking or has diarrhea. He has been able to keep water down but isn't drinking alot of it. He has no interest in food at all. I know I am going to hear "Take him to the vet" but like I said he is old and a car ride/vet visit is very traumatic for him. I just don't want to put him through all that as weak as he already is. Is there any suggestions on what I can do to get him to eat something? He is already so frail, I don't want to traumatize him at all.