There's one thing that many baby animals have in common. It's that there are times when these small animals are happy or ...

Kissing could be 21 million years old. NPR's Ayesha Rascoe speaks to Matilda Brindle an evolutionary biologist from Oxford University about the origins of smooching.

The advent of artificial intelligence might be just the latest stage in a guiding biological process that has produced ever more complex, mutually dependent organisms over the history of life.

Laughing matters. It always has. But laughing may matter even more in modern times. Does anyone think that during the Middle ...

The study defined kissing, in part, as “oral-oral contact with some movement of the lips/mouthparts and no food transfer” ...

Laughing matters. It always has. But laughing may matter even more in modern times. Does anyone think that during the Middle ...

An endangered Mexican gray wolf named Taylor has once again returned to his namesake mountain west of Albuquerque after ...

Hidden beneath a quiet patch of forest in eastern Oregon, a single organism has quietly conquered the landscape, killing ...

Kissing did not begin with star-crossed human lovers but with the primate ancestors of great apes around 20 million years ago ...

Finding a partner and sticking with them for life isn’t all that common in the animal world, but a few species really commit.

In the animal kingdom, penises can be spiked, split, corkscrewed—even detachable. They're one of the most diverse structures ...

Discover more about the special animals that each of the 50 states chose, their conservation status, and their significance.