In the Andes Mountains of northern Peru, a long-tailed mammal with a “facial mask” moved through the undergrowth. Suddenly, ...

The new species was identified by its snout and skull shape, claws, tail, teeth and other subtle physical features, the study said. DNA analysis found the new species had “almost 8%” genetic ...

The new species was identified by its snout and skull shape, claws, tail, teeth and other subtle physical features, the study said. DNA analysis found the new species had “almost 8%” genetic ...

The new species was identified by its snout and skull shape, claws, tail, teeth and other subtle physical features, the study said. DNA analysis found the new species had “almost 8%” genetic ...

The new species was identified by its snout and skull shape, claws, tail, teeth and other subtle physical features, the study said. DNA analysis found the new species had “almost 8%” genetic ...

Scientists caught small mammal with facial mask, long snout in trap at national park and discovered new species: Chachapoyas mouse opossum, study said.

Virginia opossums are the only marsupial species in the U.S. "Their little babies live in the mother's pouch until they get big enough, and then they ride on her back," says Mizejewski.

Tasmanian devils (Sarcophilus harrisii) might be small creatures, but their appetite and effect on their environment are mighty. These marsupials, which typically live only on the island of Tasmania, ...

Mini is an all-new genus of frog. (Related: "Smallest Frogs Found—Each Tinier Than an M & M.") “You could sit the brain on the top of a pin.

Megalodon teeth are the largest of all shark species. With teeth that can measure up to the size of a human hand, it is easy to imagine just how enormous these ancient sharks were. However, there ...