Huge tunnels under southern Brazil and northern Argentina were potentially made by giant, Ice Age sloths for refuge and rest ...

Scientists from several countries have determined that mosasaurs, Cretaceous-era marine reptiles, once thrived in freshwater ...

And it was huge. The ancestor of today’s 20-foot great white shark was thought to be about 26 feet long, the authors of a ...

In the animal kingdom, the creatures with the biggest hearts – relative to their size – are often the tiniest among us.

Short ancient humans in Indonesia called Homo floresiensis disappeared possibly due to severe drought that gripped their ...

A giant marine predator, once believed to roam only the seas, may have also inhabited ancient rivers 66 million years ago.

In early December 2025, the CITES Conference of the Parties, made up of representatives from 184 countries, voted to initiate or expand protection against trade for many species. The votes included ...

Giant tortoises are some of the long-lived species on the planet. Here’s what biologists now understand about one of nature’s ...

Indonesia's deadly flooding was an "extinction-level disturbance" for the world's rarest great ape, the tapanuli orangutan, ...

Fossils from Qatar have revealed a small, newly identified sea cow species that lived in the Arabian Gulf more than 20 ...

Interpol says a monthlong operation led by the international police body resulted in the rescue of nearly 30,000 live animals that were being trafficked.