I would also add, don't discount looking up either. When I had an escape (ahh love my racks, no more issues!) my BP decided to climb up the day bed that was in the room, then up the electrical panel and then pushed the drop ceiling panel up and climbed in the wall. No evidence left behind either. It was pure dumb luck and the refusal to give up that led to him being found a couple hours later. So they can and sometimes will climb.