Vomiting in cats
PetPort EditorialLast reviewed
Why is my cat vomiting, and when should I worry?
Most cat vomiting is a hairball or a meal eaten too fast. A cat that vomits once and then eats, plays and uses the litter tray normally can usually be watched at home. Vomiting more than once or twice a week, or with appetite loss, lethargy, diarrhoea or weight loss, is not normal for any cat and needs a vet.
General guidance for pet parents, not a diagnosis. Every animal is different — confirm anything that concerns you with your veterinarian.
Quick reference
| Usually not a worry | An occasional hairball, or a meal brought back after eating too fast |
|---|---|
| See a vet if | It happens more than once or twice a week, or comes with other signs |
| Do not withhold food for longer than | A few hours — cats cope badly with fasting |
| Same-day emergency | Swallowed string or thread, blood in the vomit, or retching with nothing produced |
| Never give | Human pain or nausea medicines — several are toxic to cats |
| Toxic to cats | Every part of a lily, including pollen and the water in the vase |
What is happening
Cats vomit more easily than most animals, so an occasional hairball, or a meal brought back after eating too fast, is common. What matters is how often it happens and what comes with it. Regular vomiting is a symptom with a cause, such as food intolerance, over-grooming, or an illness like kidney or thyroid disease, and the cause needs finding.
Signs to watch for
- Vomiting more than once or twice a week, even if your cat seems well
- Retching again and again with nothing coming up
- Vomiting together with not eating, hiding, diarrhoea or weight loss
What you can do
- After one episode, rest the stomach for two to three hours with water available, then offer a small meal
- Feed smaller meals more often, or use a slow feeder, if your cat eats fast and brings it back
- Brush long-haired cats to cut hairballs, and log each episode in PetPort so your vet sees the pattern
See a vet if
Your cat vomits several times in a day, retches with nothing coming up, vomits blood or something like coffee grounds, has eaten nothing for 24 hours, may have swallowed thread, string or any part of a lily, or is a kitten or senior cat that vomits more than once.
In India specifically
Many Indian cats are fed table scraps, and oily or spiced leftovers, or a sudden change of food, are common triggers. Cats here are also often given cow's milk, which most adult cats cannot digest, and it causes vomiting and diarrhoea. During festival decorating, keep thread, ribbon and tinsel out of reach: a swallowed string can cut through the gut and is an emergency.
Common questions
Is it normal for my cat to vomit hairballs?
A hairball a few times a year is normal, especially in long-haired cats. Frequent hairballs are not: they usually mean your cat is grooming more than it should, often because of itchy skin or stress, or that its gut is not moving hair through properly. Regular brushing helps, and frequent hairballs deserve a vet check.
My cat vomits right after eating. Why?
Food brought back within minutes, often whole and tube-shaped, is usually from eating too fast, which is common when cats compete at a shared bowl. Try smaller meals, a slow feeder or separate feeding spots. If it keeps happening anyway, or your cat is losing weight, see a vet.
Why is my cat vomiting yellow liquid or white foam?
Yellow liquid or foam on an empty stomach is often bile, and it can happen when a cat goes too long between meals, so a small late-evening meal sometimes stops it. If it happens more than occasionally, comes with not eating or lethargy, or your cat is older, a vet should look for the cause.
My cat vomited but is still eating and playing. Can I wait?
After a single episode in a cat that is otherwise bright, eating and using the litter tray normally, it is reasonable to watch for a day. Book a vet visit if it happens again within the week, and go the same day if your cat stops eating, hides or keeps retching.