Among the most important things an animator must keep in mind when animating is making sure that drawings read clearly to the viewer. By using strong keys, solid staging, and clear silhouettes, the audience can understand the actions that a character performs onscreen.
Legendary Disney animator Fred Moore, known for his broad yet overwhelmingly appealing drawings, took that idea one step further in his animation. Not only did he have strong silhouettes in his keys, but he ensured that his animation had strong silhouettes throughout a scene. The clarity of his silhouettes remained even in the breakdowns and inbetweens.
In this scene from Pluto’s Judgement Day, Moore animates Mickey struggling to regain order after Pluto, covered in mud, chases a kitten into his house and wrecks havoc: