The Red Book of the Republic of Belarus is a list that defines the current state of rare and endangered species of wild animals on the territory of Belarus, on the basis of which long-term forecasting and the development of practical measures aimed at their protection, reproduction and rational use are carried out. The volume “Animals* of the 3rd edition of the Red Book includes 189 species of representatives of the fauna of Belarus that need protection. The publication was prepared using improved international approaches and criteria, similar documents from other countries, taking into account national environmental priorities and capabilities, regional specifics. The book is accessible in content and an authoritative reference for workers at all levels related to environmental activities, land managers, ecologists, teachers, students, schoolchildren, intended for the widest range of readers, for all nature lovers.