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

Find out which animals live the longest and what clues this gives us for potentially slowing down human aging.

Keystone species play an outsized role in the ecosystem, affecting the natural balance in ways that cannot easily be replaced.

From the smallest and fiercest hunters to mighty beasts of land and sea, here are seven predators that routinely take on ...

With copper-blue blood prized by modern medicine and a body plan older than dinosaurs, the horseshoe crab reveals how ancient ...

Anna Champneys does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

From Santa’s reindeer and the Hanukkah armadillo to some very festive sea worms, our changing world is changing life for ...

Delaware’s official wildlife animal is not a bird from its coastal marshes or a creature from the Atlantic surf. Instead, it ...

In a type of relationship known as mutualism, two different species benefit from one another through cooperation. While some ...

Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep. Sleep is universal “even though it’s actually very ...

As part of a recent grant, students at Smith College have completed a project focused on helping the endangered Eastern rat ...