Twenty-five years ago today, a dog in Wyoming arrived at its owner’s doorstep with a dead black-footed ferret in its mouth. Until then, biologists had thought the species was extinct.
Within a few years, biologists found 17 more ferrets and started a captive-breeding program. There are now hundreds of these ferrets in the wild today, but they are still considered one of the most endangered mammals in North America.
Click here to go to the full story in NPR’s Morning Edition.