Black-footed Ferrets were thought to be extinct, but they’re making a comeback:
Bert, a male black-footed ferret peers out from a burrow in a cage at the U.S. Fish and Wildlife Service National Black-footed Ferret Conservation Center in Wellington, Colorado April 11, 2007. By 1980 it was believed that the black-footed ferret was extinct when a group of only 18 was discovered in Wyoming. With breeding taking place at the Conservation Center, the wild population is now around 500.