Those pictures which you see represent an Animatus, skill which allow you to see all bones of the famous cartoon characters. Here are showed professional project of the Bugs Bunny, Wile E Coyote and Road Runner, Donald Duck and Tom & Jerry.
This was created by Hyungkoo Lee who says that the Animatus series started with the “intention to analyze anatomical structures and physical forms of animation characters, within the hypothesis to visualize their possible anatomical foundation.” Those skeletons are constructed with a hybrid mix of real animal bones and using synthetic materials too.
Wile E Coyote and Road Runner
Tom And Jerry