Sandy Sioux City, IA 12/11/2009 12:55:40 PM My son's border collie is 2 and chewes everything. He says that dogs shouldn't have lankets etc. in their outside kennels. I would like to try the rug that I use in my car that he sits on or a heating pad that we had for our cat.What do you suggest? We have haty bails around his igloo but the igloo itself is not insulated.