#6. Blueberries

These tiny fruits are packed with antioxidants, which help combat oxidative stress and support a healthy immune system. Blueberries are also a good source of vitamins C and K, which promote overall cellular health.
While cats are obligate carnivores and don’t require fruit, offering a few fresh or frozen blueberries as a treat can provide a safe and nutritious snack. Always wash them thoroughly and avoid canned or sweetened versions.