A 14,000-year-old mummified puppy discovered in Siberia contained the unexpected remains of a woolly rhinoceros in its ...

The marsupial lion, which vanished around 40,000 years ago, was a muscular ambush predator about the size of a modern lion.

Researchers have sequenced the oldest RNA ever recovered, taken from a woolly mammoth frozen for nearly 40,000 years. The RNA ...

New research shows RNA is preserved for longer than scientists had realized. This is the oldest RNA ever profiled.

Scientists have extracted the oldest RNA molecules out of a wooly mammoth, gaining a snapshot into the processes at work in the extinct mammal's body just before it died.

A sleepy koala may seem worlds apart from a giant Ice Age predator, but scientists have uncovered the first molecular ...

From giant apes that may have crossed paths with our early ancestors, to sloths the size of small trucks, these prehistoric heavyweights reveal just how much evolution can reshape life over time. Some ...

More than 30,000 years ago, early cave artists in what is now southwestern France ventured deep underground into limestone caves, where they painted elaborate and detailed frescoes of the huge animals ...

Lions are some of the most impressive big cats to roam the Earth. Today, they are quite large for a feline, but subspecies of the Ice Age were even more gigantic. Male lions are capable of reaching ...

The Barbary lion cubs were born at the Dvůr Králové Safari Park in the Czech Republic in January Becca Longmire is a digital news writer-reporter at PEOPLE. She has been working at PEOPLE since 2024.