Cistude
The most important mammal species are red deer, fallow deer, roe deer, wild boar, grey wolf, red fox and golden jackal. The largest birds of prey are the white-tailed eagles with a wing-span of over two meters, and the Eurasian eagle-owl. The river is located on the Via Pontica bird migratory route. There are about 50 fish species, such as flathead grey mullet, big-scale sand smelt, European eel, round goby, Caucasian dwarf goby, as well as abundant populations of European pond turtle.