Is Mint toxic to cats?
Mint is mildly toxic to cats (S1 Caution): the ASPCA lists garden mint (Mentha) with essential oils causing vomiting and diarrhea with large ingestions — a nibble is unlikely to matter, a feast can.
- TOXINessential oils
- WHAT TO EXPECTvomiting (large ingestions); diarrhea (large ingestions)
- CALL THE VETCall your vet if vomiting or diarrhea persists or worsens or your cat stops eating or drinking.
Symptoms
| SIGN |
|---|
| vomiting (large ingestions) |
| diarrhea (large ingestions) |
If your cat just ate it
Care at a glance
FAQ
Can a cat be allergic to mint, or is toxicity the only concern?
Our grade covers toxicity, and that is the documented risk. Mint's essential oils are the toxic principle: the ASPCA lists garden mint (Mentha) with "vomiting (large ingestions)" and "diarrhea (large ingestions)" — a dose-dependent gut reaction, not an immune one. No primary source we hold describes a feline mint allergy, so we don't grade one. It doesn't change what you do: move the pot out of grazing reach, and call your vet if vomiting or diarrhea persists or worsens or your cat stops eating or drinking.
Are mint leaves safe for a cat to nibble?
A nibble is unlikely to matter; a mouthful can. Mint is S1 Caution because the essential oils in the leaves are the toxic principle, and the ASPCA records "vomiting" and "diarrhea" specifically with large ingestions — the amount decides. There is no safer part to offer instead: the oils are in the leaf itself. So don't hand mint leaves over as a treat, keep the pot out of grazing reach, and call your vet if vomiting or diarrhea persists or worsens.
Does "mint is toxic" cover peppermint and spearmint too?
Yes — the ASPCA's entry is genus-level: "Garden Mint," Mentha sp., which takes in the peppermints and spearmints in your herb pot. The listed toxic principle is "Essential Oils," and the clinical signs are "Vomiting and diarrhea with large ingestions." Note what that sentence actually says: the trouble comes with large ingestions, not a sniff or a chewed leaf. Keep the pot out of grazing reach, and call your vet if vomiting or diarrhea follows a real feast rather than a nibble. One caution on scope: this grade is for true mints (Mentha) — we don't extend it to every plant with 'mint' in its shop name.