Can cats eat onions?
Toxic — do not feed
No — onions are toxic to cats, which are even more sensitive to them than dogs.
Reviewed 11 Aug 2026 against veterinary sources
🐶 Can dogs eat this? →Why
Cats are particularly susceptible to allium-induced red-blood-cell damage. Even small amounts hidden in seasoned human food or baby food can cause anaemia.
Signs of trouble to watch for
- Weakness & lethargy
- Pale gums
- Rapid breathing
- Reddish-brown urine
Think your cat ate this? Act now — don't wait for symptoms.
Contact your nearest vet or a 24×7 animal hospital immediately, and take the packaging with you so they know how much was eaten.
Safer cat treats to reach for instead
Browse pet-safe options on Furmojo.
Sources
This guide is general information, not veterinary advice. Individual pets vary by size, age, breed and health, and quantities matter — always check with your veterinarian about your specific pet.
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