a census of species in the park in 2002 recorded 50 mammals, 191 birds, 5 reptiles, 8 amphibians, 37 fish. special studies of were done of mollusks (33 species), spiders (120 species), beetles (600 species), butterflies (500 species) and dragonflies (25 species). rare species include the vulnerable russian desman, a semi-aquatic large mole that looks like a muskrat and is under protection because of historical trapping for its fur.