Deep inside the world’s longest cave system, scientists have uncovered two terrifying extinct predators that once prowled a ...

A fossil from the blustery plains of Patagonia is revising your book on one of the most elusive bands of hunting dinosaurs. The newly discovered dinosaur, Joaquinraptor casali, preyed on the soggy ...

(CNN) — Tens of millions of years ago, an apex predator resembling a giant crocodile stalked the humid freshwater floodplains of southern Patagonia. Measuring up to 11.5 feet (3.5 meters) long and ...

Federal officials have decided to reintroduce grizzly bears to the North Cascades in Washington state, Phys.org reported. Though grizzlies are native to the region, there has not been a confirmed ...

Far too many animals from Earth’s second-most remote continent have gone extinct in the past 10,000 years. Here’s one such example. In the year 1930, a striking photograph was taken. To this day, it ...

Trail cameras in the mountains of Oman recorded Arabian leopards, critically endangered predators, with prey in a first-of-its-kind sighting. Screengrab from Oman’s Environmental Authority’s YouTube ...

Caves can be thought of as nature’s original prefabricated homes. Here are five animal species that choose to live in them. While the image of early humans huddled in caves has become an almost ...