They're actually the longest teeth in the human mouth. So what are these long, sharp teeth doing among our ... amazing because anthropologists use canine size and shape to help track when ...

Here's NPR's Jonathan Lambert. JONATHAN LAMBERT, BYLINE: Generally speaking, canine teeth have two main jobs. EMILY RAYFIELD: They need to be sharp enough to puncture and slice things. But on the ...

Lions have them, hippos have them, and even you and I have them: canines, those long, pointy front teeth. They're actually the longest teeth in the human mouth. So what are these long, sharp teeth ...