Poland 20 Zlotych 2013 Wisent (Bison bonasus)

Wisent is the largest European terrestrial mammal, with the body weight reaching almost 1 tonne in males. The species lives in herds counting sometimes even over fifty individuals. Leaders of such herds are old, experienced females. Wisents feed upon ground flora of the forest, grasses and sedges growing at forest meadows, as well as tree leaves, twigs and bark. They have a very good sense of smell and hearing, but slightly weaker sight, may run with a speed of up to a few dozen kilometres per hour, and jump over obstacles up to 2 metres high. In a herd, wisents are not afraid of any predators, however weaker individuals or calves left behind the herd are likely to fall prey to wolves or bears