Can Hamsters Eat Bananas? Cute Hamster Names | Yousher. Can Hamsters Eat Bananas? Home » Hamsters » Can Hamsters Eat Bananas? The answer is yes, hamsters can eat bananas. Bananas are a great supply of dietary potassium and vitamin C, that are vital for hamsters. Hamsters are a popular pet and many people wish to know if they can eat bananas. Nonetheless, an excessive amount of banana can cause weight gain in hamsters, so you will need to only give them a small amount as a snack. In this text, we are going to look on the nutritional worth of bananas, whether or not a lot banana is dangerous for a hamster and if they will eat banana peels.