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What common cat food ingredients or human snacks might secretly contain leek or chives that could harm my 4 kg cat?

Cats · Food safety

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

Short answer

Check any 'gourmet' or 'homestyle' wet cat food, gravy toppers, and broth treats — leek powder is sometimes used as a cheap flavor enhancer. In human food, watch for seasoned potato chips, soup mixes, dips like sour cream and chive, and pre-made quiches or savory pies. The words 'allium', 'natural flavors', or 'herbs' on a label can hide these. Even a teaspoon of a dip containing chives has enough to damage a small cat's red blood cells over time. Read every ingredient list, and when in doubt, skip it.

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.

Dogs and cats carry the same rating (Do not feed), so the notes below hold for either pet.

Leek & chives should not be given to cats at all. Even a small amount can do harm, so there is no portion small enough to be safe.

Do not induce vomiting and do not give milk or oil to “dilute” it. Note the food and roughly how much was eaten, then call your vet or a pet poison hotline and follow their advice on whether to bring the pet in straight away.

Why these cautions matter

Garlic and onion damage a pet's red blood cells and can bring on anaemia. Signs are often delayed for several days, so looking fine straight afterwards does not rule it out.

Leek & chives has no place in everyday feeding: keep the rest of the day's food unchanged after this and watch the litter box and how quickly they finish the next meal.

The full verdict, portion guidance and serving notes are collected on the Leek & chives food facts page.

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