Cartoon Brew has a post linking to a Russian site, where they do side by side comparisons of frames, to show you how often Disney animators reused animation sequences. The site is in Russian, but the photos are readily understandable, so I encourage you to visit it. This is pretty interesting. I hadn’t known about it, but it makes sense. Hand animation is very hard and tedious work, and if one can use shortcuts without taking away from the viewer’s enjoyment, why not? Here’s the link.