Vivid close-up photographs accompany a narrative describing the predatory and hunting instincts of rattlesnakes. Markle explains how snakes' scales and fangs, sensitive tongues, and Jacobson's organs (which enable them to locate prey) demonstrate how the reptile's life is focused on finding food. Milestones such as shedding of skin and birthing of young are also touched on and shown in the pictures. Reading list, websites. Glos., ind.