I just found this rig on Josh Burton's site. Well he just posted it :). I played with it for a bit and it seems like lots of fun and should be great to animate. He has done tests on his site with him so you can see "Squirrely" in action. He also has all of the info you need on him. Here ya go! I'm sure he would love feedback too.
Labels: Free Rig, Josh Burton, Sqirrely Rig