Add Yahoo as a preferred source to see more of our stories on Google. A Texas angler caught a South American piranha relative with "human teeth" at a local lake Sunday. The a-pacu-lypse is upon us. As ...

Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to sink into their prey, while herbivores tend to have flatter teeth to grind down their plant-based meals. Some ...

We share our sharp canine teeth with lions, hippos, and other mammals. But believe it or not, they have nothing to do with tearing into meat. Instead, our ancestors originally used them to fight for ...

The a-pacu-lypse is upon us. As if US waterways weren’t teeming with enough invasive fish of late, a Texas angler caught a South American piranha relative with “human teeth” at a local lake on Sunday.