I appreciated all the support, it was helpful to know others were keeping an eye out too. I walked around with one of his toys that made a sound, and I left a trail of treats from the area I suspected he might be. He ended up coming home, to his food in the garage, where we left the door up and the heat on! It was such a relief to see his tracks in the snow when I woke up that day. He was gone 5 nights.