The chimp community's initial reactions to the infant were "unusual."
A near-complete fossil skeleton of an ancient reptile dates to 300 million years ago. It had a blunt skull for tunneling underground, and special scales may have helped it slither through dirt.
With their bright orange hues and lengthy migration, monarch butterflies are one of the world's most iconic insects.
A 100-pound opah fish, also known as a moonfish, was recently found washed up on a beach in Oregon hundreds of miles from its normal habitat.
Pikas eat yak poop to help them survive winters at high altitudes on the Qinghai-Tibetan Plateau in Asia.
Here's a look at the gruesome ways pythons take down their prey, from rats and mice to spotted deer and crocodiles. See photos of the snakes in action.
Ask any shark biologist a question about sharks, and chances are, the answer might begin with, "We're not really sure…"
A photographer created an astonishing time-lapse video from aerial footage of sheep as they traveled between pastures over seven months.
Giant sharks have been lurking in the ocean for millions of years. Here are eight of the biggest sharks from the past and present.
Massive lemurs once clung to Madagascar's trees. Scientists recently sequenced the nuclear genome of one extinct giant, the koala lemur, for the first time.
Between Jan. 1 and July 2, 841 manatees died near and off the coast of Florida, a record-breaking number.
Analysis of a well-preserved fossil from South Africa provided a "missing puzzle piece" for the evolution of dinosaur respiration.