Perhaps it is just saying "hello".
take a cloth and soak it in luke-warm water then ring it out and gently wipe your hamster. do not bath your hamster as they have a fear of water.
warm or hot with plenty of water
Make sure he has plenty of bedding in his house to keep him warm and make sure the room temperature is correct.
How you teach a hamster to swim is each day you shold fill the water higher until you got a hamster swimming make sure the water is warm go on try it it will work i have done this before.
Try and keep him very warm. Make sure it has plenty of water.
Warm, trees, water, and plenty of food for him to eat.
warm with plenty of shade & a good supply of water
Under one condition: their eyes , mouth , nose , and ears have to be above water and you have to let its feet touch the bottom. I have a male Russian dwarf hamster (M.C. Hamster) and he loves to swim. GOOD LUCK!
I don't think food is the matter of them hibernating. You should just feed them regular hamster food. Make sure they are warm and not on water or swimming. You can try to hold him to make your hamster to feel warm.
If your hamster has a sticky bottom you can either use a wet paper towel and gently rub it, or you can give him a bath using rodent shampoo and warm but NOT HOT water. Always remember to be gentle with your hamster.
Get some cloth and put it in to warm it up or get a little bedding micowave it for 15 second then put in bowl then add hamster. Your hamster should be warm in no time!
Hamsters shouldn't be washed under water unless of an emergency. If you have a dwarf hamster, it might like a dust bath to freshen its fur. Otherwise, only wash hamster if it absolutely needs to be washed. (For Example: gum stuck in its fur)If you must wash the hamster, wash it in warm water and dry it immediately with a hand towel. It can easily die from hypothermia if it is wet.