the vertebrate fauna includes 48 mammal species, 317 bird species, 3 reptile species, 3 amphibian species and 4 species of fish. in addition, there are about 800 species of insects. the reserve also contains 1 colony of the rare "iris potaninii". it had been planned to introduce the przewalski horse to the reserve in the 1980s, but the plans were cancelled following the collapse of the soviet union, although hopes for their implementation were rekindled in 2009. mammals of the reserve included on the iucn red list are dzeren, pallas cat and daurian hedgehog.recently a new zakaznik, the dzeren valley (долина дзерена "dalina dzyeryena"), has been created in the area to ensure migration of the dzeren between russia and mongolia.