Cats can eat blueberries. Blueberries are rich in vitamins and minerals and have antioxidant properties, which are beneficial to a cat's health. Eating blueberries in moderation can help cats supplement their nutrition, such as preventing brain aging, protecting eyesight, and softening blood vessels.

However, because blueberries contain fruit acids, excessive consumption may irritate a cat's stomach and intestines, leading to indigestion. Therefore, it is recommended to feed fresh blueberries, control the amount, and avoid feeding dried blueberries or other human foods with added sugar.