Yes, hamsters can eat raisins. Dried berries of grapes are an excellent sweet treat for hamsters, but they should eat it in small, limited quantities. Dwarf and Syrian hamsters can be given one spice at a time. The smell of raisins makes hamsters very excited and happy.
Raisins are far from the only dried fruit that hamsters can eat as a treat. They can also be given dry figs, apples, pears, dried apricots, papayas, raspberries, melons, strawberries, blackberries, gooseberries and pitted cherries.
Feed hamsters twice a day. In the morning and in the evening. The need for a hamster in food depends on the age, size, individual properties of the animal, and also the temperature of the environment. It is rational to give a hamster so much food that a little remains the next day. In a short time you will know how much food your hamster really needs.
Hamsters have their own personal preferences. The fact that one hamster eats passionately, the other just will not notice.