I had to do some research for animating a 3D horse some time ago and I decided to clean up a bit the notes I took back then, and upload them...
This is a compilation of information gathered from books and personal observations. It's not a very user-friendly tutorial and I haven't covered all possible aspects, but these are the most important ones (also, I haven't bothered with anatomy, because I'm lazy like that, and because it's beyond the purpose of this pseudo-tutorial).
I hope at least some of you will find it useful.
P.S: I really don't get the Category system on dA. ;_;