Can Cats Eat Yogurt?

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

Yogurt is fermented, so it contains less lactose than milk, which is why some cats tolerate a small spoonful where a saucer of milk would upset them. That does not make it suitable: dairy is not part of a cat's natural diet and the benefit is minimal.

Flavoured, fruit and 'no added sugar' yogurts are the real trap. Fruit yogurts can contain raisins or grape juice, and sugar-free products may contain xylitol, which is dangerous to cats.

What to watch for in the UK

• Plain Greek yogurt is the least sugary option if you offer a taste at all.
• Check 'no added sugar' labels for xylitol (E967).
• Fruit corners and muesli toppings can contain grapes, raisins or nuts.
• Yogurt is not a proven treatment for stomach upset — ask your vet instead of improvising.

If your cat has already eaten it

1. A small spoon of plain yogurt: watch the litter tray for loose stools.
2. A flavoured or 'no sugar' yogurt: check the label for xylitol; if present, phone your vet.

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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