Black-footed ferrets, also known as American polecats ... and a sharp decline in their primary food source—prairie dogs. By the early 1980s, the species was thought to be extinct until a small ...
Ferrets deemed ready to be reintroduced into ... predators and learn how to hunt and live in the burrows of their main food source: prairie dogs. Eventually, they are released and monitored ...
Their decline was precipitated by westward expansion, which systematically eliminated prairie dog populations—the ferrets' primary food source. Declared extinct in 1979, the remarkable discovery ...
An endangered animal that was created by cloning gave birth to two healthy offspring at a Smithsonian Institution/National Zoo center in Virginia, in what a federal agency called a conservation ...