Here is a picture of the frames of some animation put together on one page. This is the rough (before clean up) drawings of the gorilla from Amazing Animals jumping out of water and zipping onto the bank. It would have been on 2's and was drawn on paper. See how Mr Phil has drawn the water in red pencil and the whizz lines in blue. It's so things dont get confused and they would all be cleaned up on separate pieces of paper ready for scanning into computer and painting.