I've seen the aftermath of a bear taking the kitchen window out of a trailer. The campers had cooked up some bacon, and left the dirty pan by the window with the window open. Apparently bear wandered up and made off with the pan, ripping the window completely out of the rig.
I didn't see this go down, I heard a scream and made my way over to see what was up. Window screws and all on the ground, and middle aged man consoling terrified wife. Bear about 100 yards away licking bacon grease out of the pan with one big paw holding it down. Story was bear, the evidence seemed to support that..
The moral of the story is, don't be that camper ;-)