When I was a kid hanging out in northern Michigan, we had a family friend that had a pretty incredible relationship with a Racoon (sounds strange, I know). He befriended it when it was just a kit and built a small "house" for it to come and go as it pleased. When he would leave to go home from his cabin, the Racoon would move out into the woods and go about its life. When Jerry would return, that Racoon would show up within a day and move back in to the house. Stangest thing you ever saw. This went on for several years and they were great friends.