Samy Fecih has a long history in the animation industry. He is currently a Lead Animator over at Dreamworks India and has put up a tutorial on animating a quadruped walk cycle. It's a great insight to his workflow and some great tips in there as well.
Quadrupede Walk Cycle Tutorial from SamyOddjob on Vimeo.
Always great to see workflows!
found via lesterbanks