At the end of summer, thousands of bison will gather in the Yellowstone Valley to find a mate and transform this place into nature’s fiercest arena.
With a body weight of over 1200kg, 2m high, 3.5m long, the “Bison” is one of the largest “animals” in the United States. Most of the year, they appear to be very gentle when they rarely collide with each other and often fight enemies together.
However, during the last few weeks of summer, male bison will grow into extremely strong warriors, as this is their estrus period, their mating season.
Young males will have a chance to fight the leader. If they win they will become the new leader, but if they fail they can suffer serious injuries or even lose their lives.