To date, 46 species of mammals, 202 species of birds, 12 species of amphibians, 5 species of reptiles have been found in the Park. The most representative species among mammals is beaver which lives along river and lake banks in large numbers. At present its population was estimated at about 250 animals. Large predators are represented by wolfs (a couple of animals). Raptors, e.g. sea eagle, common buzzard, lesser spotted eagle, black kite, red kite, marsh harrier, are particularly interesting among the avian fauna. The following species can be met on the Park waters: swans, many species of ducks, grebes, coot, black-headed gull, and less frequently, red-crested pochard, and goosander. Fish are represented by 32 species, e.g. white-fish (pigmarane), European white-fish, European smelt, bream, tench, pike, eel, and reintroduced lake trout and wels. About 1,500 species of invertebrate were found in the Park, including rare and protected species of butterflies, beetles, hymenopterans, and dipterans.
