National Bison Day is observed in the United States every first Saturday of November. This day is dedicated to recognizing the historical, cultural, ecological, and economic contributions of the American bison, also known as the American buffalo. The celebration was introduced in 2012 and is actively supported by Native Americans, conservationists, bison producers, and educators. Events held on this day aim to emphasize the importance of the American bison as a symbol of the United States and its role in maintaining biodiversity and ecosystem sustainability. In 2016, the significance of the bison was further highlighted when President Barack Obama signed the National Bison Legacy Act, designating the American buffalo as the national mammal of the USA.