Well it turns out I haven't lost him.....YET. I went to the fairgrounds today. The dog-pound is down the road. I looked to see if Theo was there.
The pens have a divider that can be open to allow them outside into a kennel. Well, Theo's wasn't open. I looked into another dogs pen to see inside Theo's. He was whining and he barked to me. I know his bark anywhere. I can't believe they would trap him in the dark and not let him have at least five feet of caged/concrete freedom. Disgusting.