A new study suggests humans belong in an elite “league of monogamy,” ranking closer to beavers and meerkats than to chimpanzees. By comparing full and half siblings across species and human cultures, ...

While the birth is sparking joy, infant mountain gorillas are vulnerable, and twins can be twice as hard for a mother to take ...

A critically endangered 18-year old, western lowland gorilla named Tumani at the Audubon Zoo is pregnant. WGNO’s Kenny Lopez ...

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ornament to attract females rather than purely as a badge of status to ...

The results revealed that the female participants rated male figures that were taller, had a more V–shaped body, and a larger ...

Same-sex behavior is widespread in primates and may help strengthen social bonds and improve survival under challenging ...

Midwinter marks the annual return of humpback whales to Hawaiʻi, swimming down from Alaska to breed in the warmer waters. Tiger sharks start showing up in greater numbers soon thereafter from across ...

When Mike and Julie Hirons’ 3-year-old dog, Gracie, went missing before Christmas, the couple learned a lot about how to ...

We've compiled a list of weird animal behaviors we've amassed from the wild world web!

22 behind-the-scenes details about zookeepers’ work that most of us didn't know or wouldn’t even believe, as shared online.

Researchers from the University of Cape Town (UCT), working with international collaborators, have shown that people in ...

The real revelation, however, came from the men. Men considered a larger penis as an indicator of a rival with both greater ...