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My cat licked some leek from my stew, should I worry?

Cats · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Yes, this is urgent. Leeks are toxic to cats and can damage their red blood cells, leading to anemia. Even a small amount is dangerous. Call the ASPCA Animal Poison Control Center at (888) 426-4435 or your vet immediately.

Leek & chives — Food safety facts

Do not feed · Cats · full breakdown on the linked food page

Toxic, same family as onion and garlic. Causes red blood cell damage and anemia.

Open the full food page: Leek & chives food facts →

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