Gorillas, gibbons, siamangs, and other apes; a full range of monkeys-from tiny marmosets to the mandrill baboon; and the prosimians (lower primates), including lemurs, bush babies, pottos, lorises, and tarsiers, are introduced in full-color photographs and an informative text. Primates' appearance and behavior, adaptations, and similarities to each other and to human beings are explored, along with descriptions of their way of life, and of the problems now threatening some members of this diverse, fascinating order of animals.