Attempted Prison Break Caught On Video

This polar bear is smarter than the zookeepers.  He at least understands that large rocks can break glass.  Apparently his captors didn’t realize this when they gave him a huge rock to play with in his enclosure.  In this game, glass may beat Polar Bear, but rock definitely beats glass.

[youtube http://www.youtube.com/watch?v=nwyUD2J3CTk]