The giant aye-aye is an extinct relative of the aye-aye, the only other species in the genus Daubentonia. They lived in Madagascar and appear to have disappeared less than a thousand years ago. They are only known from subfossil remains. As of 2004, giant aye-aye remains consisted of four incisors, a tibia and postcranial material. Subfossils have been found in the southern and southeastern areas of Madagascar. They have thought to have been morphologically similar to the aye-aye, but almost double the size.