This is medea the aye aye showing off the aye aye's most intersting adaptation, their middle finger! Aye-ayes are referred to as “percussion foragers” because they use their middle finger to tap on wood, listening for the movement of larvae hidden inside. If they hear movement, they use their rodent-like incisors to gnaw into the bark exposing the larvae and then insert their elongated middle finger to extract the larvae. They are the only primates thought to use echolocation to find prey. | Cin

With its scraggly fur and piercing gaze, the aye-aye—filmed here by Joel Satore—has often been considered bad luck, but these misunderstood primates could be vital for conservation. Clove trees on the east coast of Madagascar have been ravaged by leaf miner larvae—which aye-ayes happen to be very good at hunting. Learn more about nature's unloved animals: https://on.natgeo.com/4l6QMzy Narrated by Ryan Reynolds, #Underdogs premieres Sunday, June 15 at 9/8c on National Geographic TV, simulcast on