hehe since I've had my chins i have usually been getting up at the first bump to make sure the cage doors are closed. Allthough one time i heard a dragging noise, and woke up that morning to see that they had dragged their hut (while inside it) up to the edge of the cage and somehow forgot how to drag it away. Now it is weighed down by one of those ChinChiller marble slabs, that way its harder for them to move it, and it keeps them cool on the days where the room gets up to 78 degrees no matter what the thermostat is set at. (i have recently had the privelege to catch them doing this and i am amazed at that little ball of fluff lifting that entire hut with his teeth and moving it while inside it)