Embark on a profound scientific and ethical journey into the world of one of the most intelligent and charismatic New World primates—the capuchin monkey ( Cebus and Sapajus ). This comprehensive handbook offers an in-depth exploration of their evolutionary origins, social complexity, cognitive intelligence, and the challenges they face in an era of climate change and habitat loss. Drawing from the latest research in primatology, genetics, ecology, and behavioral science , this book unveils how capuchins adapt, communicate, and thrive across tropical landscapes from Central to South America. Through richly detailed chapters, readers discover their tool use, problem-solving abilities, and the intricate social hierarchies that mirror aspects of human society. Beyond biology, The Capuchin Monkeys Handbook integrates cutting-edge insights on AI-assisted behavioral tracking, genomic cryobanking, reforestation strategies, and conservation technology , offering a forward-looking perspective on sustainable coexistence. It highlights the roles of citizen science, education, and eco-tourism in mobilizing global awareness and community-driven conservation. Ideal for students, researchers, conservationists, and wildlife enthusiasts , this volume bridges the gap between science and compassion—advocating ethical stewardship of intelligent life. It challenges readers to reimagine humanity’s relationship with nature, inspiring a new generation of primate protectors committed to empathy, innovation, and global collaboration. Whether you are captivated by the wonders of primate cognition, concerned about biodiversity conservation, or passionate about ethical coexistence, this handbook stands as an authoritative and inspiring guide to understanding and safeguarding capuchins in the 21st century. Discover. Learn. Protect. Coexist. Because the future of capuchins—and of our planet—depends on how we choose to live with intelligence beyond our own.