A commonly used counting method might have overestimated their numbers by a factor of two.

With help from bacteria, these shellfish can thrive on volcanoes made of asphalt.

By modeling the breaths of ankylosaurs, scientists have shown why these creatures had some of the most convoluted nasal passages ever seen.

In frigid waters, their ability to keep their bodies warm gives them an edge over sharks and fish.

A growing body of research has documented the health risks of getting certain breeds fixed early—so why aren’t shelters changing their policies?