Massive underground tunnels discovered across South America are not human-made. Scientists now believe extinct giant ground ...

On a lawn inside the Bronx Zoo, rows of headstones display multiple animal species, making for an eerie display during the ...

It may be hard to imagine a time when giant mastodons and other long-extinct animals were roaming the prairies of South ...

This documentary examines the immense creature that may have been the largest land animal ever to roam the planet. It ...

The Carreras Pampa site inside Torotoro National Park in central Bolivia has revealed more than 16,000 footprints by ...

Pigs, rats, cats and mongooses, all brought to the island decades earlier by humans, were to blame for their demise, preying ...

Bettongs may be small, but these Australian natives can crush hard nuts that would snap the jaws of much larger animals.

Learn how environmental constraints and a lack of soil led ancient bees to reuse fossil cavities in a Caribbean cave, leaving ...

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

Researchers analyzing ancient fossils from caves across Western Australia have uncovered a completely new species of bettong ...

More than a dozen Bornean elephants have been killed — including five beheaded — in Malaysia in the past 18 months, the ...

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