Can Hamsters Eat Bananas? Hamster Lifespan - How to care Cute Hamster Syrian blog 9774. Can Hamsters Eat Bananas? Home » Hamsters » Can Hamsters Eat Bananas? The answer is yes, hamsters can eat bananas. Bananas are a superb source of dietary potassium and vitamin C, which are necessary for hamsters. Hamsters are a popular pet and many individuals need to know if they will eat bananas.