As one of the news team's first correspondents, Jen Viegas has covered everything from megalodon to dwarf dinosaurs. She has also worked as a journalist for the BBC World Service, PBS, other media outlets, as well as the National Academy of Sciences. Some of her favorite moments include howling at chimps with primatologist Jane Goodall and witnessing the live birth of a sea otter at Monterey Bay.
Experts say cats may hold even more potential than dogs when it comes to sniffing out missing persons, bombs drugs and diseases.
Relatively little is known about the social structure of many early American societies, but genetics have just uncovered a female dynasty that existed for centuries.
All of the newly found frogs are nocturnal and four tiny ones sound just like insects.
The loss of about 25,000 elephants at Gabon's Minkébé National Park highlights how sanctuaries can inadvertently make animals easy targets to poachers.
Here's a look at flagrant instances of "alternative facts" presented as science.
Tigers, leopards and wild dogs are known to attack each other ferociously, but in parts of India the carnivores seem to be peacefully co-existing.
A battle is now underway between animal rights groups and the USDA over the federal agency's decision to remove animal welfare inspection reports from its website.