Overview
If your cat not eating is becoming a worry, it’s often a sign something’s wrong. Illness, pain, dental problems, or stress are all frequent causes. But sometimes, even small changes to their food, routine, or environment can put them off eating. Kittens and overweight cats are most at risk, as not eating for even a short time can quickly lead to serious illness like fatty liver disease (hepatic lipidosis).
Some cats still want to eat but struggle to do so — this is called pseudo-anorexia and is often linked to dental pain, mouth injuries, or illness. Others lose interest in food completely — known as true anorexia — which can be caused by nausea, illness, or stress. If your cat hasn’t eaten for more than 24 hours — or 12 hours for kittens — it’s best to contact your vet. Acting early can make all the difference.
My cat’s not eating — should I see the vet?
What are the causes for a cat not eating?
What can I do to encourage my cat to eat?
How is anorexia in cats diagnosed and treated?
Cat not eating FAQs
What do studies say about loss of appetite in cats?
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Get regular health checks, vaccinations, and more, all included in your plan.
Medically reviewed by Lizzie Youens, BSc(Hons) BVSc MRCVS
Published on 22/06/2018 • Reviewed on 23/07/2025