Sibert and Red Cloud, black-footed ferret siblings at the Smithsonian’s National Zoo and Conservation Biology Institute, are ...

The black-footed ferret kits, named Sibert and Red Cloud, at six weeks old Smithsonian’s National Zoo and Conservation ...

Scientists say the births of two ferrets are the first time a cloned endangered species has reproduced in a conservation ...

They were born in June, along with a third who died shortly after birth, according to the agency. Sibert and Red Cloud could make an enormous contribution to the species because their mother was ...

Authorities indicated that techniques used in their work with black-footed ferrets could help preserve other endangered ...

SUMMERS: The U.S. Fish and Wildlife Service recently announced that Antonia, a cloned black-footed ferret, had given birth to ...

She had a meet-cute with a 3-year-old black-footed ferret named Urchin, they mated, and then she gave birth to kits Sibert ...

SHAPIRO: And now, with the arrival of Red Cloud and Sibert and the genetic diversity they represent, there's new hope for future generations of black-footed ferrets. (SOUNDBITE OF LADY WRAY SONG ...