Cat Ate Onion or Garlic? Symptoms and What to Do | Petopic
If your cat ate onion or garlic, treat it as a poisoning risk and contact a vet for advice. Onions, garlic, leeks, shallots, spring onions and chives belong to the allium family, and they can be harmful to cats whether they are raw, cooked, fried, dried, powdered or hidden inside human food. These ingredients can damage a cat’s red blood cells and may lead to haemolytic anaemia, which can cause weakness, pale gums, fast breathing, a rapid heartbeat, dark urine, jaundice, collapse and, in severe cases, life-threatening illness. Early signs may include being sick, diarrhoea, drooling, a sore tummy, reduced appetite and unusual tiredness, but one of the dangerous things about onion and garlic poisoning is that anaemia signs may be delayed. A cat can seem fine at first and still be at risk. If your cat has eaten onion gravy, stuffing, garlic sauce, curry, takeaway, stock, soup, baby food, meat cooked with onion, food seasoned with garlic powder or any product containing onion or garlic, note the amount, time, ingredients and your cat’s weight, then call your vet or an emergency vet clinic. This guide explains why onions and garlic are toxic to cats, what symptoms to watch for, what to do first, what not to do at home and when urgent veterinary care is needed.
28 June 2026
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