The rusty patched bumblebee is the first native bee to become an endangered species in the United States.
It's a question that has bedeviled kindergartners, and now apparently PhDs have the answer: Why do giant pandas have spots?
Lemurs are considered the world's most endangered mammal, but a team of researchers have devised a system called LemurFaceID, which uses facial-recognition software to spot lemurs ...
One the National Zoo's biggest stars is our Power Player of the Week
More from our behind the scenes at the Smithsonian's National Zoo as they prepare for Bao Bao, the giant panda's trip to China
A critically endangered species of antelope is dying by the thousands from a deadly infectious disease outbreak in Mongolia, and scientists fear there could be "catastrophic conseq...
Google and the World Wildlife Fund are casting a spotlight on the plight of the pangolins with an incredibly intricate and cute Google Doodle.
A rare frog that has not been seen in decades and listed as possibly extinct has made a reappearance.
While the bird has not been photographed since the 1930s, a new study conducted by a researcher at the Naval Research Laboratory posits that - despite the lack of definitive eviden...
Northern river otters appear to be returning home more than 100 years after they completely disappeared from Colorado