Nobody likes the idea of animals going extinct, but this ongoing issue becomes even more alarming when you look into it. Today, there are numerous creatures that are on the brink of extinction and ...

A new study shows how the extinction of giant animals 10,000 years ago reshaped food webs, with lasting impacts on ecosystems.

Twelve giant species once roamed Ice Age North America, from mammoths and mastodons to saber-toothed cats, dire wolves, and ...

What starts with the asteroid that killed the dinosaurs quickly becomes a journey through the entire rise of modern life on ...

If there are two things you picture when you hear the word “kangaroo,” chances are it’s either a mama with a joey in her pouch or their propensity to hop across the Outback. It’s daunting enough that ...

Sloth in prison -- The Great Basin now and then -- A zoologically impoverished world -- Dating an ass -- A stable of ground sloths -- Extinct mammals, dangerous plants, and the early peoples of the ...

Giant species such as saber-tooth tigers triggered "ripple effects" still felt today when they vanished thousands of years ago, say scientists. Many of the world's largest mammals — also including ...

For millions of years, colossal ice age beasts dominated the planet. But then, in a geological blink, they were gone. In just a 40,000‑year span, ending around 10,000 years ago, the world lost many of ...

Giant kangaroos that lived during the Ice Age may not have been as slow and grounded as once believed. A new study finds their leg bones and tendons were likely strong enough to support hopping, ...

Researchers identified an early mammal ancestor whose eggs may have helped it survive the Great Dying 250 million years ago.