I never had a pet ; now I have a cat....?

You should make a Vet appointment, explain the problem and they would probably want a stool specimen. You should have a vet for the cat anyway, because they should have certain shots and a yearly checkups. When my cats throw up undigested food, they usually need wormed to rid them of intestinal parasites. As far as the food issue, I keep their bowl full of good quality dry food and they eat as much as they want with no weight problems. I give them a small amount of canned food once a day for a treat. Regular vet appointments are important for dogs. for cats as well as.