I was frantic for a half hour...sheer panic. You think they are trained..but there is always a moment. He slipped past me..ran out the door. I tried calling, he wanted me to chase him. I tried ignoring him...he ran off. OH MY GOD!!!! I then went on the search. I was just putting Addie in the pen to set out in my car when suddenly he came out of nowhere. I just let him follow her into the pen........now I can collapse. My heart is pounding still... just when you think they know all the rules...they act on impulse. I'm still shaking. WHEW.