A lion's roar is undeniably one of the most fearsome sounds across the entire animal kingdom. Now, it turns out these majestic creatures produce not just one, but two distinct types of roar. That's ...

The roar of an African lion is one of the most iconic sounds of the animal kingdom. However, my new research suggests it should actually be separated into two distinct vocalisations: the full-throated ...

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 ...

However, according to research published in Ecology and Evolution journal last month, lions actually have a second roar that ...