Quick Take Female ferrets (jills) only ovulate after mating, so unpaired jills can stay in heat with high estrogen for weeks.

Take one look at a happy ferret at play, and you'll immediately understand why so many people love them. They're so effusively energetic, constantly moving, playing, and exploring - and when they're ...

Two more black-footed ferrets have been cloned from the genes used for the first clone of an endangered species in the U.S., bringing to three the number of slinky predators genetically identical to ...

Jennifer McRae is a digital media producer for CBS Colorado with more than 25 years of experience in news. Jennifer is part of the digital team recognized for excellence for Best Website several times ...

Well, in this case, the story is real. For the first time in U.S. history, a cloned endangered species has produced offspring. SUMMERS: The U.S. Fish and Wildlife Service recently announced that ...