Only surviving representative of the primate family Dubentonidae (Perry et al., 2018). The fossil record shows Daubentonia robusta represents the extinct Aye-Aye. The Aye-Aye is also 30% smaller than its extinct ancestors and compared to other prosimians, they have a smaller skull and braincase, but a large brain (Quinn & Wilson, 2004). 

The Aye-Aye can be distinguished from other lemurs by its prominent, triangular, naked ears; long, bushy tail; and long digits with curved claws (Quinn & Wilson, 2004). 

These morphological adaptations -- unique to the Aye-Aye -- needs more research and discovery of extinct members to understand where they evolved from. 

This behavior is not convergent to echolocation as seen in bats and dolphins (Bankoff et al., 2017). 

Developed with use of the large pinnae and may have coevolved with their vocal calls. Their hearing is sensitive between 2 and 27 Hz and the tapping produces frequencies between 6Hz and 15Hz (Ramsier & Dominy, 2012). 

Foraging for food in dead trees may be a consequence of limited resources (Thompson et al., 2016).