Ivy D., age 11, Hyde Park, New York Teeth help animals bite and chew food. Meat-eating carnivores tend to have sharp teeth to ...

Whether you’re talking about sharks, crocodiles, lions, or even velociraptors, some of the most fearsome traits of these predators involve their rows of sharp, crushing, or jagged teeth. Only ...

Imagine a sloth. You probably picture a medium-sized, tree-dwelling creature hanging from a branch. Today's sloths—commonly featured on children's backpacks, stationery and lunch boxes—are slow-moving ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

Show the zoologist Bill Schutt what your mouth looks like, and he’ll tell you who you are. By Sam Kean Sam Kean is the author of six books on science history, including “The Icepick Surgeon” and “The ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The planet’s humble mollusks have teeth that mean business ...