The Aye-aye, the largest nocturnal lemur of Madgascar, is certainly one of the most amazing creatures on earth. Compared to other lemurs, it is unusual in having rodent-like continuously growing incisors, bony prolonged middle fingers and disproportionally large ears.
An arboreal lemur, it travels through the forest canopy by making successive vertical leaps, much like a squirrel. When foraging, it taps on trunks and large branches, listening to the echo produced to find hollow chambers inside. Once a chamber is found it chews a hole into the wood and get grubs out of that hole with its narrow and bony middle fingers.