Can Cats Eat Blueberries?

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

Blueberries contain no compounds known to be toxic to cats, and some commercial cat treats include them. They are mostly water and fibre, so the nutritional contribution is minimal.

The practical risk is size: a whole blueberry is a choking hazard for a small cat, and the skin can be hard to digest. Halving them solves both problems.

What to watch for in the UK

• Two or three berries, cut in half, is a treat — not a portion.
• Wash them; frozen berries should be defrosted, not given rock hard.
• Dried blueberries and blueberry muffins or cereal are not the same thing — those add sugar and raisins.
• Berry plants in the garden are not a problem, but the netting used to protect them can trap a cat.

If your cat has already eaten it

1. A few berries: nothing to do.
2. A whole punnet: watch for vomiting or diarrhoea and offer water.

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.

Related foods

Browse the full A–Z of 36 everyday foods.