A Hyena's giggle is not actually laughter, but a sound of frustration. New research found a way to distinguish individual hyenas based on the peculiarities of their, well, let's call them fighting ...

As dusk begins cloaking the Maasai Mara grasslands of southwestern Kenya, a spotted hyena slinks beneath the woody umbrella that is the acacia tree. The carnivore pauses, its rounded ears cocking ...