All animals need sleep. When humans or animals don't get enough, it can lead to trouble paying attention, irritability, and other ill effects. And yet, researchers reporting in the journal Current ...

Dim the lights, put on some slow jams... get up in the tree? National Geographic's Crittercam technology just revealed a mating ritual never before seen in any bear species. An Andean bear named Ruru ...

Finding a partner and sticking with them for life isn’t all that common in the animal world, but a few species really commit. Scientists have found lifelong bonds among creatures in trees, rivers, ...