Bison bulls can weigh up to 2,000 pounds and stand 6 feet tall, while cows reach 1,000 pounds and 4-5 feet.
The Interior manages 17 bison herds across 12 states, safeguarding about 10,000 bison, a third of all wild North American bison.
In North America, they're scientifically known as Bison bison bison, though historically called buffalo.
Yellowstone hosts the largest U.S. bison population, descendants from prehistoric times, now numbering around 5,450.
Bison calves, born March to May, start orange-red and grow dark brown hair, developing humps and horns.
Bison are vital in Native American culture, providing food, materials, and spiritual value.
A hanging tail indicates calm, upright signals possible danger—always respect their unpredictability.
Wind Cave National Park’s bison revived populations nationwide, starting in 1905 with the American Bison Society.