Endemic to Madagascar, the aye-aye is now known to be more wide-ranging than was previously thought, occurring in dry forests in the northwest and west of the island as well as the rainforest of the east coast (4). Introduced populations also occur on the islands of Nosy Mangabe and Aye-Aye, which is located above Mananara Nord (1). However, in all localities this species appears only at very low densities (8).