For decades, a lion's roar was thought to be a single, familiar sound. But hidden inside that iconic call is a second, long-overlooked "intermediary roar" that reveals a more complex vocal landscape ...

Lions are famous for a roar that can rattle windows and carry across the savanna, yet researchers now say the big cats have been hiding a vocal trick no one had clearly documented before. By listening ...

DETROW: Or some version of that sound. This particular roar comes courtesy of a lion named Jeronimo (ph). Well, what if I told you that this sound... (SOUNDBITE OF LION ROARING) DETROW: ...Was also a ...

A powerful roar rocked the forest before the silhouette of a lioness appeared at an Indian reserve, a potent image of how conservation efforts have brought the creatures back from the brink. In Gir ...