Examines the process of extinction and humans' responsibility for the disappearance of many species and the destruction of their habitats.

"This superbly illustrated encyclopedia looks at the tracks and signs left by over 400 animals, from top predators to animals in your backyard. Find out what to look for when tracking your favorite beasts: footprints, droppings and pellets, animal homes, feeding signs, and other signs of specific behavior"--Book jacket.