This is a series of 4 videos made by a lameness vet. These are fantastic. Take notes if the hind leg lameness in the other video was not clear to you. (these were hijacked by dressage hub, looking for the original link) Dr. Kaneps video - excellent - Dr. Schell: U Ga Vet Med: explains how 'hip hike' is seen in hind leg lameness instead of bobbing head in many cases: On the above video, note how QUICK the hip hike is on the lame side, and the movement of the hip up and down on the sound side is much smoother, more gradual, and not as sudden, AND not as much. The above video has excellent explanation.