Disguise is a crucial skill for survival. Animal Camouflage shows nature's skill at instinctive disguise. The author describes the techniques of animal camouflage, explains how and why it works, and what its role is in the evolution of species. Moths that look like wasps, birds that mimic trees, fish that make "smoke screens" — here, in word and picture, is the hidden world around us. Dr. Adolf Portmann is Professor and Director of the Zoological Institute at the University of Basel.