Animating! Using a reference video I shot myself, I sketched up a color-coded skeleton - red for front legs, green for rear - and tested it in Photoshop. Looks excellent. The weight is distributed and the legs move in the proper phases, alternating with their partner(s). I did an earlier walking yak, but its legs looked rubbery because I was just shooting from the hip (har?) and the main joints were hidden under all the fur. So, animation tests are good.