Once believed to be extinct, wildlife biologists estimate there are 500 black-foot ferrets in the U.S. after decades of ...

In a "groundbreaking achievement," a clone of an endangered species of ferret has given birth to babies for the very first time. The mother, named Antonia, is a clone of another black-footed ...

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World’s first cloned black-footed ferret gives birth in Virginia - The birth of the two kits signifies ‘a major milestone’ in ...