How do you keep a hamster warm in winter?

In winter, add more warm bedding like wood shavings and cotton to the cage; the hamster will burrow in and make a cozy nest. Keep the cage in a wind-free spot to avoid chills and colds.

Also boost nutrition, because as temperatures drop the hamster burns energy to stay warm; offer high-fat, high-protein foods like mealworms, sunflower seeds, and small shrimp to build fat reserves.