Big Worm is our cat, a stray who showed up 9 years ago and decided to stay, thus he lives outside. He has a heated, insulated cat box on our covered front porch that he stays in when it’s cold. I can put my hand in that box anytime he is in there and feel the heat so I know he stays warm enough. Today I could tell that he recently left the box due to the kitty trail he left on the porch steps. (I’ll add a link in a couple of days on how to build the insulated kitty box).
How to build an insulated cat box – step by step instructions and photos.