Can Cats Eat Peanut Butter?

Updated 18 October 2026 · Researched against PDSA, Cats Protection and International Cat Care guidance

Plain peanut butter is not toxic to cats, but it is high in fat, salt and often sugar, and cats have no need for any of it. The usual use is hiding a tablet, which vets often advise against for exactly this reason.

The real hazard is the ingredient list. Xylitol — a sugar alcohol used in some 'no added sugar' and 'natural' spreads — is dangerous to cats, and peanut butter is one of the products where it hides. Read the label before sharing a lick.

What to watch for in the UK

• Check for xylitol (sometimes listed as E967), added salt and palm oil.
• Crunchy peanut butter is a choking risk; smooth is safer if you use it at all.
• Peanut butter is a common choke hazard for the jar lid and the spoon, not just the spread.
• Never use it to give medication unless your vet has approved that route.

If your cat has already eaten it

1. A small lick of plain peanut butter: nothing to do.
2. Any amount containing xylitol: phone your vet immediately, even if the cat seems well.

Out of hours, use your practice's emergency number. If you can, take the packaging with you — the ingredient list often tells the vet more than the description does. This page explains risk; it cannot diagnose your cat, and it deliberately contains no doses or home treatments.

If your cat is already vomiting, see the cat vomiting guide. For the wider red-flag checklist, use sick cat symptoms. If a plant rather than a food is involved, the toxic plants checklist is the right page.

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