Two endangered black-footed ferrets cloned from frozen tissue samples

Noreen and Antonia, born last May, are among first cloned offspring of a native endangered species in the North America

Two more black-footed ferrets have been successfully cloned in an attempt to save the endangered species, the US Fish and Wildlife Service (USFWS) announced.

The national agency shared news about the births of ferrets Noreen and Antonia, who were both born last May.