Majestic, strong, and fascinating—the lion has always been considered the king of animals. But how long do these impressive big cats really live, and what factors affect their lifespan? PETBOOK ...

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 ...