Bestiary of the Russian Language: Ways to Fill Gaps in the Designation of Females and Cubs

The role of the bestiary of the Russian language in the national language picture of the world as a constantly expanding layer of vocabulary is shown. The bestiary is represented by three groups-basic paradigms (complete, incomplete, and unfilled). In complete paradigms, suppletive formations are of particular interest. For this group it is marked a tendency to a leveling of the paradigm by creating a motivated neoderivatives. In incomplete paradigms, represented by two varieties, there are also active processes of expansion due to differentiation by gender or designation of the cub.