Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

Only my 5 kg tabby ate a few leaves of fresh thyme from the windowsill; my other two cats didn't touch it. How should I handle the whole household?

Cats · Food safety

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

Short answer

Thyme is safe for cats in normal cooking amounts, so your tabby is fine. For the household, simply remove the remaining thyme plant to a high shelf or closed room to prevent future snacking. There's no need to isolate the cats from each other or clean the house — thyme isn't contagious. Just watch the tabby for any rare individual stomach upset, like a single episode of vomiting. If that happens, offer a bland meal and call your own vet only if it continues.

Thyme — Food safety facts

Safe to share · Cats · full breakdown on the linked food page

Safe in normal cooking amounts.

Dogs and cats carry the same rating (Safe to share), so the notes below hold for either pet.

Thyme is not toxic to cats. The real limit is calories, fat and salt, so treat it as a small extra alongside the normal ration rather than a meal in itself.

There is no poisoning risk here, and the usual problem is simply eating too much at once: a heavy fat or salt load can bring on loose stools or a single vomit. Offer water, keep an eye on the pet for 24 hours, and do not induce vomiting.

Thyme can stay on the rotation, but only as an extra mouthful: keep the rest of the day's food unchanged 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 Thyme food facts page.

Open the full food page: Thyme food facts →