Here are some animation I've been doing on on my sparetime. After seing some bat walking and running I just though this would be quite cool to exploit this kind of motion, so here it is.
You can find the references I've been using on Carl Zimmer's vimeo : vimeo.com/user447015

Although the rig used is based on Thresher, a version I customized myself but you should be able to find the rig on creative crash.

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