Since my childhood I have been very interested in tracks of mammals and in the entire variety of activity signs of mammals and birds on the whole. Within this my passion I tried to push forward not only identifying of mammal activity signs, but their usage in track-based research methods on population ecology as well as to reconstruct correctly the respective behavior of mammals from their activity signs. Several books were published on this topic. With respect to that I would like to create a more comprehensive and complete book about mammal activity signs titled as “Reading mammal signs…”. I gradually work on this project, and hopefully the first edition of such a track book will be published within the next two years.