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 Leopard Man's Story The Leopard Man's Story "The Leopard Man's Story" is a short mystery story by Jack London. It was first published in the August 1903 issue of "Leslie's Weekly" and, in 1906, included in "Moon-Face and Other Stories". The "Leopard Man", a saddened leopard trainer who bore visible scars on his arms and whose personality diametrically opposed his daring profession, tells a tale of a "lion-tamer who was hated by another man" to the narrator. The unnamed man, who hated the lion-tamer, attended every performance in hopes of watching the lion crunch down on his tamer during his "big play", sticking