Pygmy hippos Iris and her calf, Poppy, cool off under a water hose spray at Metro Richmond Zoo in Moseley, Virginia. (Credit: ...

Ariana Huffington once wrote in The Sleep Revolution that “sleep deprivation is glamorised and celebrated: ‘You snooze, you ...

David Muir has the story of the 5-week-old pygmy hippo who refused to leave the pool on a hot summer day, until his mother ...

"World News Tonight" anchor David Muir shared a heartwarming moment at Tanganyika Wildlife Park, just outside Wichita, Kansas ...