Guinea Pig in winter?

well a heat pad or heat lamp would be best but I would also suggest pillow stuffing or fleece in their bed so that they can snuggle into it and keep their body heat in. also make sure they cant touch the heat lamp so they dont get burned and you should be able to find all this at petsmart. and if there is a very bad storm i would sneak them in without your parents knowing or she could have a heart attack from being scared. well good luck! XD