America Declared the Black-Footed Ferret Extinct — Then a Ranch Dog Found the Last 18 in Wyoming

America once believed the black-footed ferret was gone forever. Then, in Wyoming, a ranch dog made an accidental discovery that changed the species’ future. This video tells the remarkable story of how a tiny surviving population was found, how conservationists raced to save the last ferrets, and how one of North America’s rarest mammals was brought back from the edge of extinction.