After a general introduction titled "Born to Be Predators," six chapters cover individual types of mammals (lion, wolverine, honey badger, etc.). Topics include appearance, habitat, hunting and capturing prey, and threat-level to humans; the text's tone is sometimes reassuring, sometimes gruesome. "At-a-Glance" sidebars are useful for comparison. The dense text is off-putting, but the many photos should fascinate fierce-and-furry-creature fans. Reading list, websites. Glos., ind.