Aye-aye

The aye-aye is a nocturnal primate native only to Madagascar, the largest nocturnal primate in the world and one of the most unusual-looking lemurs, with large ever-growing incisor teeth, huge sensitive ears and an extremely thin, elongated middle finger used to tap on tree bark and probe for grubs in a foraging technique called percussive foraging. It listens for the hollow sound of wood-boring insect larvae beneath the bark, then gnaws a hole and extracts the larvae with its specialized finger, a method of feeding unique among primates and more typical of woodpeckers. Aye-ayes have long been regarded with superstition and fear in parts of Madagascar, which has contributed to persecution alongside habitat loss, and the species is classified as endangered.