I watched some dog walking animation and the actual shooting video, drew this dog walking animation sketch in the observation and drawing process, I found that the dog walking is not easy to produce animation, in the advance of each piece of the body has a subtle movement and the height of the ups and downs, and in order to make the animation of the animal walks, so that they are more flexible, and need to be added to the ability to imagine this and we usually do character animation. This is a new challenge for us compared to our usual character animation.