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Saber teeth, of saber-toothed cat fame, are pretty fearsome. They're canines, like humans have, but elongated to a sharp point that juts out below the jaw. These fangs have evolved at least five times ...

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 ...

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 appearance of ...

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 ...