This American alligator, like crocodiles and other related species, is a meat-eating power biter. (Credit: US Fish & Wildlife Service)

Someone says “crocodiles” and the image that comes to mind is probably a toothy one. Modern crocodilians are power biters, and many species are apex predators. But it wasn’t always that way.

Paleontologists believe that multiple extinct species preferred plants over prey.

Toothfully Speaking

Humans, like most mammals, are heterodonts: We have