Narrator: 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 ...

In the history of teeth, perhaps no tooth is as famous as the saber tooth. These long, blade-like canines seem almost perfectly optimized to kill prey. They've evolved at least five times in mammals, ...

Have you ever wondered if slugs can smile — or if they even have teeth? Their smooth bodies and simple appearance might ...

Piranhas belong to a family of bony fish characterized by highly developed dentition. They’re cousins to the pacu fish, which has dentition eerily similar to human teeth. Unlike pacu teeth, which are ...

Saber teeth — the large fangs of saber-tooth cat fame — are fearsome. They evolved at least five times in predators that are now extinct, but there's been something of a mystery as to why. Saber teeth ...