Cats generally should not eat grapes. Grapes and grape products, such as raisins and grape jam, are toxic to cats. This is mainly because certain components in grapes can cause kidney failure and poisoning symptoms in cats, so feeding grapes to cats can seriously harm their health.

If your cat accidentally ingests grapes, you should immediately take them to a veterinary clinic for examination and treatment. It's also important to detect the problem promptly and take measures such as inducing vomiting to help reduce toxin absorption. In severe cases, you may need to take measures to protect the liver and accelerate toxin elimination.