Hamster was active in the morning but inactive by afternoon; it moves when lightly touched, and its body feels cool
Expert Answer
A hamster that suddenly stops moving along with a drop in body temperature may have entered a pseudo-hibernation state. It is recommended to raise the environmental temperature — for example, place the hamster in a warm blanket and put heat packs around and under the blanket. You can also wrap the hamster in a towel and place it near a radiator or a heat lamp; once its body temperature rises, the hamster will gradually regain consciousness.
After the hamster wakes up, you can give it some glucose-electrolyte water and high-calorie food to replenish the sugar in its body.