Compulsive hair-pulling can be alarming but isn't dangerous. When the hair is swallowed, however, serious complications can occur. Here’s what parents should know about trichobezoars.

Great white sharks have a reputation for being some of the most ferocious animals in the ocean, owing in part to their mouth full of sharp, serrated teeth. Most people believe that they are born as ...

WASHINGTON, March 12 (Reuters) - A new analysis of a large shinbone unearthed in a remote spot in northwestern New Mexico in ...

Terror birds were large flightless predators that dominated parts of South America after the extinction of the dinosaurs. Fossil evidence shows they relied on powerful legs for speed and a massive ...

Getting close to a stingray is risky, even for an accomplished predator such as an orca. They are not called stingrays for nothing! But if you can take them by surprise and stun them with a brutal ...