---
title: "Aye-Aye (Daubentonia madagascariensis) | AnimalTracks.wiki"
description: "Nocturnal lemur with huge ears, ever-growing incisors, and a skeletal-looking middle finger that finds grubs by tapping."
image: "https://animaltracks.wiki/images/animals/aye-aye-1.webp"
published: "2026-08-31"
updated: "2026-09-16"
---
# Aye-Aye (*Daubentonia madagascariensis*)
> **Status**: Checked against 7 sources, listed under Sources below.
> **Tagline**: Nocturnal lemur with huge ears, ever-growing incisors, and a skeletal-looking middle finger that finds grubs by tapping.
> **Soundtrack Vibe**: Gypsy Punk & Dark Cabaret // Gogol Bordello, "Start Wearing Purple"
> **Soundtrack Links**: [Spotify](https://open.spotify.com/track/3a9hbrOOkF7oceIANxQOap) | [YouTube](https://www.youtube.com/watch?v=qBxgyMGqSx0)
> **Vibe Match**: Wild-eyed, chaotic acoustic polyrhythms for a lemur that walks along branches tapping them continuously and rapidly with its middle finger, listening for the echo of an insect tunnel.
## Biological Superpowers & Stats
- **Taxonomy**: *Daubentonia madagascariensis*
- **Danger Level**: Low
- **Conservation Status**: Endangered ([IUCN Red List](https://doi.org/10.2305/iucn.uk.2020-2.rlts.t6302a115560793.en))
- **Superpower**: Tap foraging: it taps wood rapidly with its middle finger, listens for the echo of an insect tunnel, then hooks the larva out with that slender, flexible finger.
- **Habitat**: Rainforest, deciduous forest, and cultivated plantations along Madagascar's east coast and in its northwestern forests.
- **Diet**: Almost entirely invertebrates, especially insect larvae living inside trees, with some nuts and seeds; known to raid coconut, lychee, and mango plantations.
- **Tags**: mammal, rainforest, insectivore, nocturnal, tree-dweller
## Natural History & Behavior
## It Taps, Then Listens
Aye-ayes are nocturnal, solitary foragers who spend up to 80% of the night feeding and traveling through the forest canopy. A significant share of their diet is insect larvae (grubs) living inside dead or living trees, and they have evolved a specialized way of finding them, called tap foraging. Walking along a branch, an aye-aye taps the wood continuously and rapidly with its middle finger. It cups its huge ears forward and listens closely to the echoes coming from the tapped tree. When the sound shows it is above an insect tunnel, the aye-aye tears off enormous chunks of bark with its teeth. Then it slides that slender, highly flexible finger into the hole and hooks the grub out with the fingertip.
## Odd Fingers, Odd Teeth
Aye-ayes are the world's largest nocturnal primate, at around 38 centimetres long, with a fluffy tail that is longer than their bodies. An adult weighs 2.5 to 2.8 kilograms. Their fingers are long, and the third finger is thinner than the others. According to a 2005 anatomy study, this middle finger is no longer used for moving around. It works as a probe for finding and pulling out wood-boring larvae, and its phalanges (finger bones) can move both at great speed and independently of each other.
Then there are the teeth. An aye-aye's incisors (front teeth) are continually growing, which the Duke Lemur Center calls unique among primates, and only their front surface has a coat of enamel.
> **A Night Animal With a Working Color Gene** Some nocturnal primates are colorblind because a gene for a light-sensing pigment, called SWS1, has stopped working. In the aye-aye that gene is intact, and its pigment is most sensitive to light with a wavelength of 406 nanometres, closer to ultraviolet than in most primates. A 2012 study reported that twilight is rich in bluish light, and that twilight and full moonlight are probably bright enough for color vision. The researchers speculate that the gene is an adaptation for twilight, and point to possible blue targets such as scent marks and the brilliant blue arils (seed coverings) of the Ravenala plant.
## Diet, Range and Lifespan
The Duke Lemur Center describes the aye-aye's diet as highly specialized, made up almost entirely of invertebrates with some nuts and seeds. A study published in 1994 found that one wild population ate four main food types: seeds, nectar, fungus and insect larvae. Aye-ayes are also known to raid coconut, lychee and mango plantations. They live along Madagascar's east coast and in its northwestern forests, in rainforest, deciduous forest and cultivated plantations. The AnAge longevity database lists a maximum lifespan of 32.3 years, for a captive aye-aye reported by the Duke Lemur Center.
## Hunted as a Bad Omen
The aye-aye's population is not dense, so seeing one in the wild is incredibly rare. The main threats to its survival are habitat loss and hunting. Its bizarre appearance has traditionally led many villagers to regard the aye-aye as an evil omen, or fady, that must be killed on sight to avoid bringing bad luck onto an entire village. Aye-ayes are also sometimes killed as crop-threatening pests in agricultural areas. The IUCN Red List assesses the species as Endangered.
## Frequently Asked Questions
### How does an aye-aye find grubs hidden inside trees?
By tapping. Walking along a branch, the aye-aye taps the wood continuously and rapidly with its middle finger, then cups its huge ears forward and listens to the echoes. When the sound shows it is above an insect tunnel, it tears off chunks of bark with its teeth, slides its slender, flexible third finger into the hole and hooks the larva out with the fingertip. *(Source: [Duke Lemur Center]())*
### Do an aye-aye's teeth keep growing?
Yes. An aye-aye's incisors (front teeth) are continually growing, which the Duke Lemur Center calls unique among primates. When tapping finds an insect tunnel, the aye-aye uses its teeth to tear off enormous chunks of bark. *(Source: [Duke Lemur Center]())*
### Why are aye-ayes killed in Madagascar?
Their bizarre appearance has traditionally led many villagers to regard the aye-aye as an evil omen, or fady, that must be killed on sight to avoid bringing bad luck onto an entire village. Aye-ayes are also sometimes killed as crop-threatening pests in agricultural areas. *(Source: [Duke Lemur Center]())*
### Can aye-ayes see color at night?
Possibly, at twilight or under a full moon. Some nocturnal primates are colorblind, but the aye-aye's SWS1 pigment gene is intact, with peak sensitivity at 406 nanometres, closer to ultraviolet than in most primates. A 2012 study found that twilight and full moonlight are probably bright enough to support color vision. *(Source: [Melin et al. 2012]())*
## Sources
1. [Aye-aye. Duke Lemur Center.]()
2. [Daubentonia madagascariensis (aye-aye). Animal Diversity Web, University of Michigan.]()
3. [Sterling et al. (1994). Dietary Intake, Food Composition and Nutrient Intake in Wild and Captive Populations of Daubentonia madagascariensis. Folia Primatologica.]()
4. [Soligo (2005). Anatomy of the Hand and Arm in Daubentonia madagascariensis: A Functional and Phylogenetic Outlook. Folia Primatologica.]()
5. [Melin et al. (2012). Why Aye-Ayes See Blue. American Journal of Primatology.]()
6. [Daubentonia madagascariensis. AnAge: The Animal Ageing and Longevity Database, Build 15, 2023.]()
7. [Louis et al. (2020). Daubentonia madagascariensis. The IUCN Red List of Threatened Species 2020: e.T6302A115560793.]()
*Published August 31, 2026. Last updated September 16, 2026.*
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