older cat throws up dry food. Vet put her on sensitive stomach wet food. We added some tuna to it and she will only eat it if the tunas in it. She just licks it and pushes it to bottom of dish. We will add some water to it and stir it in, but she licks the water out of it. She seems to be holding her weight but is always hungry. We bought some sensitive stomach dry food because we have another cat and it is hard to separate them at dinner time. She eats some of it, but, wants the wet food I think because it has tuna in it. Occasionally she will throw up the food.