Now make the cow turn from side to side. First click on the right side of the cow at frame 15, and then scale down horizontally by 5-6%. Do the same on left side of the cow at frame 15, but this time scale up horizontally 5-6%. This gives the illusion that the cow is turning from side to side. (That you do this horizontally is critical. The best way is to drag the image horizontally using the scale tool. There should be no change in the vertical axis.)
