Animal Welfare Institute "Roots of Human Behavior" is a vibrant photo documentation of the parallels between animal and human expressions, emotions and psychology. A prominent mind in the field of laboratory science, as well as a veterinarian and ethologist, Viktor Reinhardt's 280 candid photos of animals and humans reveal stunning resemblances between the species. The book is well worth having (and a bargain at $8), and you can get a free PDF version online.
