Why Do Hyenas Laugh?

Are hyenas the most misunderstood animals in the wild? They re intelligent, they have a sophisticated social order, and their famous laugh isn t even a laugh. Watch the Full Episode with your FREE trial for Smithsonian Channel Plus by signing up today at https://watch.smithsonianchannel.com/ From: KILLER IQ: LIONS VS. HYENAS: Predator Games http://bitly.com/188cSwA