Bison are large, herbivorous mammals native to North America and Europe. They are known for their massive size, with males weighing up to 2,000 pounds and standing about 6 feet tall at the shoulder. Bison have a distinctive hump on their backs and thick fur, which helps them survive in cold climates. They primarily graze on grasses and can be found in plains, grasslands, and national parks. Historically, bison played a crucial role in the lives of many Indigenous peoples, providing food, clothing, and materials for shelter. Their populations dramatically declined in the 19th century due to overhunting and habitat loss. Conservation efforts have since helped restore some populations, and they are now protected in various reserves and parks.