Just hangin'

Do pandas ever attack? I mean, I just always see them hanging, rolling in a ball like an armadillo, eating, and getting scared of their own farts.
But do they like, attack?

"Hang in there panda"
https://s-media-cache-ak0.pinimg.com/736x/c7/4b/0e/c74b0ecac2d3d3c77a50855a4e4ff648.jpg