Flimsy Wall

I was to take Junnu to the vet. In order to block his possible escape route, I put the box atop the white cupboard. When I returned to the living room, the curious creature had jumped up the check up the supposed hindrance. You see him eyeing up the forbidden zone, wherefrom it's impossible to extract him.  I improved the block. When it was time to go, he sensed danger and jumped to escape. I caught him midair and forced him into the carrier bag.