Can my hamster have grape juice?

No, hamsters should not have grape juice. Grape juice contains a high amount of sugar, which is not good for hamsters. It can cause your hamster to become obese, and it can also lead to diabetes. Additionally, grape juice can contain harmful bacteria that can cause your hamster to become sick. If you want to give your hamster a treat, stick to small pieces of fresh fruits or vegetables that are safe for them to eat.