Animals have evolved to sleep in extreme ways — for example, taking micro naps during parenting, sleeping on the wing during ...

In the 2014 animated film Penguins of Madagascar (streaming now on Peacock), a small group of Antarctic flightless birds undertake the greatest adventure in penguin history. Along the way, they have ...

It's a challenge for all new parents: Getting enough sleep while keeping a close eye on their newborns. For some penguins, it means thousands of mini-catnaps a day, researchers discovered.Chinstrap ...