Why Is My Cat Not Eating? Causes and What to Do

A cat that won't eat for more than 24–48 hours should be seen by a vet — cats can become seriously unwell quickly if they stop eating. Short-term fussiness is common, but a true loss of appetite is always worth taking seriously.

Last updated: 9 June 2026 · PetsRus Team

Common reasons cats stop eating

• Stress or change — new home, new pet, moved bowls.
• Dental pain or mouth problems.
• Illness, nausea or pain.
• Food fussiness, or food that's gone stale.

Things to try at home

• Offer fresh food in a clean, shallow bowl away from noise and other pets.
• Warm wet food slightly to release the aroma.
• Keep mealtimes calm and on a routine; a lick bowl can encourage anxious eaters.

Frequently asked questions

When should I worry?

See your vet if your cat hasn't eaten in 24–48 hours, or sooner if they seem unwell, are vomiting, or are a kitten.

My cat eats treats but not meals — why?

Often fussiness or mild nausea. Don't fill up on treats; ask your vet if it persists.