Heidi was always doing it..too nosey for her own good!
At my mother in laws she was always getting herself stuck in a room seperate from us as the doors in my MIL's house tend to swing shut after you..she would push the door with her nose to get in the room but then couldn't get out again! I would hear her whimpering and scratching on the other side of the door!
A scary moment for me was when we were out on a walk near a golf course and there were lots of rabbit burrows around...well, Heidi disappears down one and didn't come up for a couple of minutes!
it was the longest 2 mins of my life! but thankfully she reappeared.. she has got herself trapped in cupboards and all sorts!