I had the best dog ever. One night I was fast asleep and he was gently "biting" my hand just enough to wake me up. Once I woke up he started tugging on it as if to say, follow me. It was so weird. SO I follow him and he leads me to the side door or my house, sits facing the door and barks ever so silently. I then realize someone is outside picking the lock. I called 911. It was a drunk guy, no idea what his intentions were once he got in, but my dog for some reason managed to get him arrested. He probably would have been scared away had my dog just barked, but for some reason the old boy wanted to alert me quietly.