Add Yahoo as a preferred source to see more of our stories on Google. This wasn’t always a mystery. If you had the misfortune of being a human being more than 10,000 years ago, there’s a decent chance ...

Sabertooth cats make up a diverse group of long-toothed predators that roamed Africa around 6-7 million years ago, around the time that hominins—the group that includes modern humans—began to evolve.