The area is a salmonid region, inhabited by the riverine brown trout. Another 25 species of fish live in the rivers and streams, so as the fire salamander and newts. There are 203 species of birds, of which 154 are nesting in the park, 10 are wintering, 30 are passing and 13 are wandering. Important species include golden eagle, Ural owl and hawk. As the park is the most important habitat in Serbia for long-legged buzzard, Eurasian woodcock and an endemic Balkan horned lark, an area of was declared a European Important Bird Area. The griffon vulture disappeared from the region in the late 1940s. In 2017 a program for their reintroduction began within the scope of a wider European program. Among other things, the feeders will be placed along the vultures' migratory route. Over 30 mammalian species are found in the park, including lesser mole-rat, hazel dormouse and the Tertiary relict, European snow vole. Brown bear became extinct in Serbian part, but evidence showing the presence of the bears were found in 2014. The bears have been photographed in 2015, before disappearing again until 2019 when a young brown bear was filmed on camera.