How the Snake Lost Its Legs the butterfly, the snake, and the cheetah. Each consists of three to eight sections named in the style of Rudyard Kipling's "Just So Stories", with titles like "How the butterfly got its spots" or "How the snake elongated its body", though a couple of sections use "Why?" rather than "How?", as in "Why the fly twirls his penis" (it rotates during embryonic development under the control of different genes). In these chapters, Held explains the mechanics of evolutionary developmental biology, complete with accounts of what genes such as hox, hedgehog, and engrailed do to shape bodies. The third part is
The Caboose Who Got Loose Pelley wrote that "Bill Peet rides full throttle with a happy story and his beautiful, incredible crayon pictures." The Caboose Who Got Loose The Caboose Who Got Loose is a children's picture book written and illustrated by Bill Peet. "The Caboose Who Got Loose", published in 1971 by Houghton Mifflin, tells the story of Katy Caboose, a caboose who is tired of being dragged around at the end of the train by the Engine. She dreams of being part of the beautiful sceneries she passes during her trips, but she cannot because she is always on the move. One day,