There’s compelling evidence that dogs experience "runner's high," a euphoria-inducing buzz experienced by regular runners and other athletes. Continue reading →

In the Brazilian beach city of Balneario Camboriu in the southern state of Santa Catarina, residents and tourists were surprised to see an elephant seal on a busy street. The nearly 10-foot mammal stopped traffic for more than hour as ... ->

Heavy rains are driving large kangaroos, prized for their super-sized testicles, out of hunting range. ->

This common back yard critter can differentiate between scents in each nostril. ->

A group of dolphins work to keep a sick member of their pod afloat, off the coast of South Korea. ->

So-called "faux" fur may actually contain dog hair, according to Humane Society of the United States investigations. Inspectors for the Humane Society say fur from a canine species known as the raccoon dog (Nyctereutes procyonoides) was found on garments labeled as being "faux-fur." (Raccoon dogs i...

The "top 40 nature photographs of all time," as selected by the International League of Conservation Photographers (ILCP), will be auctioned by Christie's International on April 22 in honor of Earth Day.

Meet "Hammer-Biter," a newly discovered marsupial that lived 10 to 17 million years ago and had hammer-like teeth.