Resume. Volume 17 start the practice of our editions with the release of the series "twice a year" (semi-annual). The volume and all articles in it will get DOI, each article has home page, all articles have English extended summary, table names, captures to figures and bibliography. Size of the issue is 19 articles on 156 pages, згрупованих у 8 розділів, зокрема "Fauna and Systematics" (2 articles), "Mammals in Protected Ecosystems" (3), "Morphology and Variation" (1), "Ecology and Conservation" (3), "Population Research" (3), "Methods of Study and Modeling" (2), "History of Research" (2), "Chronicles and Information" (3). In the end of volume there are summaries of all the articles in Ukrainian.
