The book contains information about Altai mammals leading an active lifestyle in winter. It includes a tracer for alternative signs and a brief description of the appearance of mammals, their geographical distribution and stations within the Altai Republic. The book is equipped with original drawings of tracks and animals, intended as a textbook for novice workers in the jaeger service, for students of biological and geographical specialties, for young hunters and for a wide range of nature lovers interested in the animal world. The reprint of the book is dedicated to the 85th anniversary of the Altai Reserve and the 100th anniversary of the Reserve System of Russia.