My crazy dog will not get IN a dog house. I just gave one away that we'd had for his whole life and I don't think he had ever done more than stuck his head in it. For the longest after I got the porch put on, he wouldn't even go in there except to eat. It would be pouring rain and he would be UNDER the porch, with water running over his feet. Now, he will go in the porch when its cold or wet. I think I will look into the plastic. I've also seen heated dog beds, but I don't really like the thought of him lying down wet on something electric.
We live in NC, so it doesn't get REALLY cold here. Usually we have a few days that don't get out of the 20's, but more often it is 30's-40's at the coldest. He comes in at night, and sometimes by the time the sun sets if its a really cold day.
Marsha