THAT's where all that time in animation school comes in handy.
The BIBLE for motion, human and quadruped, at least, is EADWEARD MUYBRIDGE. His two major collections are :THE HUMAN FIGURE IN MOTION and ANIMALS IN MOTION. I am pretty sure you can order those through our own milk-shop here at the COW. Be ready to cough up north of fifty buck for each.
Or visit your local library and ask for it. That's enough time for the gig.
He had a bet to settle, to see if a horse could lift all four feet at a time when running. For this he rigged a line of still cameras beside the track that would shoot triggered by the horse's pass and a grid to measure the progress on the other side . The resulting photos started the whole thing. Check them out. That's exactly what you want.