Do bison still exist in the prairie?

Today there are around 400,000 bison in the North American steppes, but they had almost become extinct about 120 years ago. At that time the few remaining animals were transferred to the Yellowstone National Park in North America to protect them. Bison are nomadic grazers and are usually peaceful, unconcerned, and even lazy. However, they may attack, often without warning and for no apparent reason. The Native Americans lived on the meat of the animal and used the skin, fur, bones, and tendons to make a variety of things like tents, clothes, tools, and weapons.