What do you guys think of something like this:
Outlast Dog Beds - Outlast Pet Crate Pads - Heated & Cooled Dog Bed
It uses the dogs body heat to warm the bed instead of being powered up by anything...I was thinking of getting the kennel size one sinc I just leave his kennel open in the kitchen when I'm not at home, figured he could climb in there to warm up if it gets to chilly for him...