April 23, 2009 -- Deteriorating screws in bridges, fish that listen in the dark, medical devices that use sound to treat disease, the detected comeback of a long-gone whale, the sound of hyenas, ...

Welcome back to ALL THINGS CONSIDERED. I'm Linda Wertheimer. Now, even if you've never heard a laughing hyena in the wild, you might recognize this hyena. Mr. CHEECH MARIN (Actor): (as Banzai) It's ...

Have you ever heard the phrase "laughing hyenas"? Do they really laugh? In a word, no. There are four kinds of hyenas _ aardwolf, brown, spotted and striped _ but only the spotted hyena makes sounds ...

· If you ever hear a spotted hyena making a sound, you might think it is laughing hysterically. It isn't. When a hyena is excited or scared, it lets out a noise that is a combination of a strange howl ...

When you think of a hyena, you make think of their signature laughter. But not all hyenas laugh. In fact, their laughter is actually a vocalization of distress, often used to signal threats or attacks ...

Sy Montgomery thinks hyenas have gotten a bad reputation. They are, it turns out, great hunters, not the skulking scavengers of "The Lion King." They are also very social creatures and express ...

On quiet nights across large swaths of the African bush, you may hear a series of whooping calls in the distance. This unique sound is the long-distance vocalisation used by spotted hyenas (Crocuta ...

The spotted hyena is Africa's most successful predator—and one of its most misunderstood animals. But decades of cutting edge research is yielding greater understanding, respect, and protection. A ...