European bison bonasus herd grazing in a muddy steppe, Czechia

bison bonasus wisent european zubr czechia animal bull grazing nature natural reserve wild wildlife mammal wagging tail grassland horned cattle bovine endangered steppe walking habitat herd cow calf bovinae bovidae gregarious poland herbivore ruminant ungulate pasture hooves conservation field documentary countryside flank muddy dry quadrupedal fur horns plain ruminating