Poop: A Natural History of the Unmentionable is a children's book about (animal) feces, written by Nicola Davies and illustrated by Neal Layton. The book gives info about the nature, production, variety, and manifold uses of animal poop. The book analyzes styles, sizes, uses, and smells of animal poop. It is an instructional guide on bathroom self-reliance. It tells how naturalists study poop to determine animal diets and how paleontologists analyze fossilized poop to learn about prehistoric animals. Source: Wikipedia (en)