Elizabeth Ann, the first cloned black-footed ferret and first-ever cloned U.S. endangered species, pokes through a pipe at 50-days old at the U.S. Fish and Wildlife Service's (USFWS) National Black-footed Ferret Conservation Center near Fort Collins, Colorado, U.S. Jan. 29, 2021. (Photo/Agencies)
Elizabeth Ann, the first cloned black-footed ferret and first-ever cloned U.S. endangered species, at 60-days old, checks out a snack at the U.S. Fish and Wildlife Service's (USFWS) National Black-footed Ferret Conservation Center near Fort Collins, Colorado, U.S., Feb. 18, 2021. (Photo/Agencies)
File phot shows Bert, a male black-footed ferret peering out from a burrow in a cage at the U.S. Fish and Wildlife Service National Black-footed Ferret Conservation Center in Wellington, Colorado, Apr. 11, 2007. (Photo/Agencies)
