Fruits that cats should not eat include grapes, raisins, onions, garlic, persimmons, star fruit, and avocados. These fruits may contain components that are toxic to cats, such as an unidentified toxin in grapes, sulfides in onions, and persin in avocados.

Before feeding your cat fruit, consult a veterinarian to ensure food safety. Feed your cat primarily cat food and avoid feeding them human food.