Part 1 Introduction: how this book works; what is a mammal; evolution; diversity; anatomy; reproduction; social groups; senses and communication; locomotion; feeding; desert mammals; grassland mammals; forest mammals; polar and mountain mammals; aquatic mammals; watching mammals; threatened mammals; conservation; mammals and humans; classification. Part 2 Catalogue: egg-laying mammals; marsupials; insectivores; bats; elephant-shrews; flying lemurs; tree shrews; primates - prosimians, monkeys, apes; sloths, anteaters, armadillos; pangolins; rabbits, hares and pikas; rodents; cetaceans - toothed whales and dolphins, baleen whales; carnivores - dogs and foxes, bears, raccoons, mustelids, viverrids, hyenas and aardwolf, cats; seals and sea lions; elephants; hydraxes; aardvark; sirenians; odd-toed ungulates -horses. rhinoceroses, tapirs; even-toed ungulates - wild pigs, hippopotamuses, camels and relatives, deer, pronghorn, giraffe and okapi, cattle, antelope and relatives.