How to Keep Feral and Outdoor Cats Warm and Safe in Winter Build or Buy a Cat Shelter.
The best way to keep your outside cat warm in winter is to have a safe place for it to sleep.
Set Up Heaters or Warming Pads.
Depending on your budget, another great way to help keep outdoor cats warm is by having one of those enclosed oil-filled radiator heaters.
Provide Cats With Plenty of Fresh Food.