The Pacific viperfish's sharp teeth are so long they protrude out of its mouth. These fascinating fish live deep below the ocean's surface.

And an estimated 90% of adults in the US have fillings. But many animals don't have this problem. Because they can regrow their teeth replacing old, damaged ones with brand new pearly whites.

animal abundance and food webs from oceans long past. And just how many of these microfossil teeth might be out there? “Certainly billions,” Sibert guesstimates, “and I think trillions might ...

Many are toothless too. According to the Florida Museum, “Some have tiny teeth on their upper jaws ... That’s more than any ...

There are many different kinds of ... female to breed and bear young. Worker animals dig the burrows that the whole clan inhabits, using their prominent teeth and snouts. They also gather the ...

That individual animal lived not so long before the Cretaceous-Tertiary extinction that wiped out many of Earth's species some 65 million years ago. Brachychampsa had short teeth and a large mouth ...

flexible tissue is their teeth. The group includes the more famous animals such as whale sharks and great whites, but also all rays, skates and the little-known chimaeras (also known as ratfish, ...