close-up portrait of herd of water buffalo bubalis murrensis eating a green bush. ermakov island, danube biosphere reserve in

animals arnee asian asiatic beasts bubalis bubalus buffalo buffalos bull bush carpathian cattle cow domestic eating economy environment ermakov europe european farming free green head indian introduced invading invasion invasive island kine landscape mammal murrensis nature nonnative one populations portrait raising readaptation released rewilding river rural scene species stock subspecies type ukraine ukrainian water wild wildlife