How can we compare human and machine intelligence when we can’t decide which species – cats or dogs — is more intelligent?

A new study has the clearest evidence yet that territorial expansion after lethal conflict can directly boost reproductive ...

The San Francisco Zoo announced Thursday it will say goodbye to its three remaining chimpanzees as it temporarily shutters ...

New research suggests the first kiss occurred 16.9-21.5 million years ago between ape ancestors in Africa. Scientists ...

Researchers studying animal behaviour say mouth-to-mouth kissing likely appeared in the common ancestor of humans and great apes more than 21 million years ago.

Humans spend a lot more time kissing than they do thinking about why they kiss. But scientists intrigued by this question say ...

WARNING: Graphic and distressing content. St. James Davis was savagely attacked by two chimps at the animal sanctuary where ...

The global search for the most intelligent animals has become one of science’s most captivating pursuits. From jungles to ...

For decades, anthropologists have wondered whether kissing is an evolutionary thing or a unique cultural quirk we humans ...

The Serengeti is rightfully popular, but Tanzania has 23 national parks, many of which offer very different safari ...

Video from the coast of British Columbia may be the first documented instance of a wild wolf using a tool, according to the ...

The Smithsonian's National Zoo and Conservation Biology Institute announced four cheetah cubs were born last month to ...