Panda play

This isn't really history, but we noticed that the two adult pandas at the National Zoo, Mei Xiang and Tian Tian, have been left to play in the same enclosure today. Often they are kept separated, like when the female (Mei Xiang) is expecting or raising a cub, but today (and I'm guessing the next several months), the two will have the occasional playtime.
They really seem to enjoy themselves. They play a sort of wrestle tag and take turns being "it." Link to the PandaCams.

Photo: Jessie Cohen, National Zoo