(Close-up of a shark with sharp teeth. Credit: GIOVANNI NITTI / Shutterstock.) Shark teeth are a marvel of evolution. They are so sharp that many island cultures once used them as weapons and tools to ...

The animal kingdom is no stranger to astonishing abilities, including the remarkable power to regenerate lost or damaged body ...

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 ...

Named for its razor-like teeth, Novaculadon mirabilis came from a rodent-like order that outlived the dinosaur extinction before vanishing about 30 million years ago. By Sara Novak Around 145 million ...

Whales are mighty. Blue whales, for example, aren’t only the largest animal on Earth, but as far as we know, they’re the largest animal that’s ever existed on Earth—and that includes dinosaurs.

Prefer Newsweek on Google to see more of our trusted coverage when you search. Two new snake eel species discovered in Vietnamese waters, one with "robust" teeth and one with "sharp" teeth, were ...

The Old Town Police Department said residents should not approach the lizard if they spot the creature Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013, covering ...