Cocoa climbed out of her pen

Not sure, how she did it, but I was sitting in my office on the computer and all of a sudden felt something climbing on my feet. When I looked down, I saw Cocoa. She managed somehow to climb out of her pen and land on the feet, when falling on the floor. Obviously she was inspecting her new surroundings and the USPS boxes that I have stored in my office caught her special attention. She climbed on top of them to then slip down on the floor.

 

She seems to like that game and is repeating it over and over again. Who would have thought those USPS boxes could entertain my big girl so much :)