 Buffalo nearly went extinct in the early 1900s, but now they are back at Yellowstone National Park, pounding along roads and delighting tourists. Keith Lovett at the Bronx Zoo. This is a species that there's been a lot of work to restore them. Visitors are also excited to celebrate the rare birth of a white buffalo calf, which is a very sacred event for the Lakota tribe. Legend has it it fulfills a nearly 2,000-year-old prophecy of better days on the horizon, but more must be done amid the threat of climate change.