This book offers a groundbreaking, zoological perspective on human behavior, examining humans as a species of animal. The author, a renowned zoologist, delves into various aspects of human life including sexuality, child-rearing, and social structures, comparing them with the behaviors of other animals. Through this comparative analysis, the book challenges conventional views on human exceptionalism, arguing that many human behaviors can be understood through our biological and evolutionary origins. The work has sparked considerable debate and discussion, influencing both scientific and popular views on human nature since its publication.