Discover the extraordinary world of tarsiers—one of the smallest, most enigmatic, and evolutionarily unique primates on Earth. The Tarsiers Handbook is a comprehensive and authoritative guide that brings together decades of research, cultural insights, and conservation knowledge into a single professional reference designed for students, researchers, educators, and wildlife enthusiasts. This in-depth handbook explores every dimension of tarsier life, from their fossil origins and evolutionary significance to their specialized adaptations for nocturnal vision, leaping locomotion, and obligate faunivory. Readers will gain an advanced understanding of taxonomy, morphology, behavior, reproduction, and ecological roles, while also confronting the conservation challenges posed by habitat loss, climate change, and the illegal pet trade. Beyond biology, the book integrates the cultural and symbolic importance of tarsiers in Southeast Asian traditions, their role in myths, folklore, and modern ecotourism, and the ethical and legal debates surrounding captivity and exploitation. Practical sections on captive husbandry, health management, nutrition, and breeding highlight both the challenges and the responsibilities of stewardship, while advanced discussions of citizen science, technological innovations, and community-based conservation showcase pathways to a sustainable future. Whether used as a scientific reference, an educational resource, or a conservation guide, The Tarsiers Handbook is more than a book—it is a call to action. It equips readers not only with knowledge but also with the awareness and ethical responsibility to ensure that these remarkable primates, whose lineage stretches back over 45 million years, continue to leap through the forests of Southeast Asia for generations to come.