Can cats eat Thyme?
Caution. Fresh culinary thyme in small amounts is low-risk, but the essential oil is toxic to cats, and 'creeping thyme' and related garden species contain higher concentrations of problematic compounds.
Content compiled with reference to guidance from the Blue Cross, PDSA, Royal Veterinary College (RVC), Battersea, and Animal PoisonLine. This site does not provide veterinary advice — always consult a vet. Last reviewed: 27 September 2026.
Key facts
- Verdict: Caution — some risk involved. See the detail below before giving thyme to your cat.
- Category: Herb
- Onset: Signs can start 0–12 hours — see the full timeline below.
If your cat has eaten thyme
- For a nibbled leaf: monitor for vomiting and drooling.
- For a larger ingestion or essential oil exposure: call your vet or the Animal PoisonLine on 01202 509000.
- Remove any diffusers if concentrated oil is involved.
What's the full picture?
Culinary thyme (Thymus vulgaris) is mildly unsafe for cats in amounts significantly larger than a sprinkling on food. The main concern is the essential oils (thymol, carvacrol), which cats metabolise poorly.
Creeping thyme (Thymus serpyllum) used as ground cover in UK gardens is a specific concern — some cats will chew on it, and larger ingestions can cause drooling, vomiting, and incoordination.
Thyme essential oil — used in room sprays, natural pest control, or diffusers — is toxic and should not be used in cat households.
Symptoms to watch for
We earn commission from some links below (Amazon Associates, Commission Junction, AWIN). This supports the site at no extra cost to you.
Cat owner essentials
For prescription-strength flea, tick and wormer protection, Best Vet Care ships direct from licensed vets — no vet visit required. (affiliate link)
Questions owners ask
How much thyme would actually cause a problem for a cat?
A pinch of dried culinary thyme sprinkled on food isn't a meaningful risk. The concern scales up with quantity and concentration — a cat that chews a significant amount of fresh thyme, or especially creeping thyme ground cover in a garden, is getting a much higher dose of the essential oils (thymol, carvacrol) than a seasoning-level exposure, and can develop drooling, vomiting, and wobbliness.
Is thyme essential oil as risky as other essential oils on this site?
Yes — thyme essential oil used in room sprays, natural pest control products, or diffusers carries the same concentrated-toxin risk described for tea tree, eucalyptus, and peppermint oils, because cats metabolise these compounds poorly regardless of which plant they originally came from. Don't use thyme oil products in a cat household.
Are there safe herb alternatives to thyme for a cat-friendly garden?
Catnip, cat grass, and valerian are purpose-grown for cats and considered safe in the quantities cats naturally consume. If you want culinary herbs in the same garden, keep them in a separate, fenced bed the cat can't access, since even 'mildly risky' herbs like thyme are best kept away from unsupervised grazing.
UK: For complete daily nutrition, Feline 40 is a cat supplement trusted by 2,600+ UK owners. (affiliate link)US: For raw and natural food recommendations, Raw Paws Pet Food ships raw/natural cat food, toppers and treats. (affiliate link)
Recommended for cat owners
Related
Sources referenced for this guidance
- Veterinary Poisons Information Service (VPIS) — UK clinical toxicology reference used by vets
- International Cat Care — feline-specific clinical guidance
- BSAVA — British Small Animal Veterinary Association reference materials
- Merck Veterinary Manual — professional veterinary reference
About this guidance
Every entry on this site is compiled from published UK veterinary toxicology sources — International Cat Care, Veterinary Poisons Information Service (VPIS) references, RCVS-registered practice materials, and peer-reviewed feline medicine literature. Where the evidence is mixed, we err on the cautious side because cats are unusually sensitive to many common substances that are harmless to humans and even to dogs.
This is general information written for UK cat owners. It is not personalised veterinary advice for your specific cat, their age, weight, medical history, or the exact exposure you're dealing with. If your cat has eaten something or is unwell, call your vet first. The Animal PoisonLine on 01202 509000 is available 24/7 for a small fee and can tell you whether an emergency visit is needed.
Entries are reviewed and updated as new research emerges. Spotted an error? Let us know — corrections are investigated and applied within 24 hours. For more context on how we work, see about and our full disclaimer.
Last reviewed: · By the What Can My Cat Eat? editorial team