Cats can tolerate the cold  pretty well, but if it’s too cold, it can hurt your cat. Even with their fur coat, outdoor cats can get hypothermia and frostbite when the temperature gets below freezing.  Young, old and sick cats are especially vulnerable. Other wintertime hazards include ingesting deadly antifreeze and sleeping on warm car engines.  If you let your cat outdoors, provide a snug shelter and bring him indoors at night. Provide heated water bowls to prevent dehydration. Keep your cat well fed and well brushed. Matted fur provides poor insulation.  The best thing to do during the cold winter months is to keep your cat inside with you where he is safest in any weather and where he could snuggle into a nice warm cat bed.