Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A mummified ice age ...

They've evolved at least five times in mammals, most notably in the saber-tooth cat Smilodon, who sported serrated sabers that could measure nearly one foot long. But behind the fearsome ...

A mechanical analysis of the distinctive canines of California's saber-toothed cat (Smilodon fatalis) suggests that the baby tooth that preceded each saber stayed in place for years to stabilize ...

Woolly mammoths, giant sloths and saber-toothed cats were a fact of life for early humans. But today’s researchers can only hope to find fossils that will shed more light on the existence of ...

An curved arrow pointing right. Paleontologists have discovered the first saber-toothed tiger paw prints. The fossilized prints date back 50,000 years and were discovered in Argentina. Produced by ...

These long, blade-like canines seem almost perfectly optimized to kill prey. They've evolved at least five times in mammals, most notably in the saber-tooth cat Smilodon, who sported serrated sabers ...