My cat won't eat — should I worry?

Usually worth a vet visit

A cat refusing food is more urgent than in dogs — cats that don't eat for a couple of days risk a dangerous liver condition (hepatic lipidosis). Don't wait too long.

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🔴 When it's an emergency

●No food for more than 24–48 hours, especially overweight cats
●Not eating AND hiding, vomiting, or lethargic
●A male cat also straining in the litter box (possible blockage — emergency)
●Yellow tint to gums/eyes, or collapse

🟢 Usually okay to monitor

●Skipped one meal but otherwise normal
●Still drinking, normal litter box, normal energy

Frequently asked

How long can a cat safely go without food?

Much less than dogs. After about 24–48 hours without eating, cats — especially overweight ones — risk hepatic lipidosis, a serious liver condition. Contact your vet if your cat won't eat for a day or more.

Why won't my cat eat?

Causes range from stress and dental pain to nausea, kidney disease, and infections. Because not eating itself becomes dangerous in cats, it's worth a vet check sooner rather than later.

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Pocket Vet editorial team

Written and maintained by the Pocket Vet editorial team using authoritative veterinary sources. Reviewed June 8, 2026. This guide is informational only and not a substitute for professional veterinary care — see our editorial & safety policy. When in doubt, contact your vet; in a true emergency, go to an emergency clinic immediately.

Sources