Whether you don't know - hamsters can eat sunflower seeds as part of their diet, not only in our Hamster Eats Sunflower Seed Sticker. Sunflower seeds are a standard delight for these cuties and can provide a good source of protein, fiber, and healthy fats. However, it is necessary to remember that sunflower seeds should only be given to hamsters in moderation, as they are also high in fat and can contribute to obesity and other health problems if given in excess.