Aye-aye | Overview, Facts, Diet & Habitat


The aye-aye is a nocturnal lemur from Madagascar with a unique elongated middle finger used for tapping trees to locate insects.

Aye-aye Overview


The aye-aye is a unique and bizarre-looking primate native to Madagascar. It has large, round eyes and a bushy tail, resembling a mix between a bat and a rodent. Its most distinctive feature is its long, bony middle finger, used to tap on tree bark and extract insects for food.

The aye-aye’s fur is coarse and dark brown, with a patch of white on its back. Despite its unusual appearance, the aye-aye plays a vital role in its ecosystem as a nocturnal predator.

Origins And Evolution

The aye-aye (Daubentonia madagascariensis) traces its origins and evolution to the isolated island of Madagascar, where unique environmental conditions spurred its distinct features and behaviors.

Belonging to the strepsirrhine suborder, the aye-aye’s evolutionary ancestry diverged from other primates millions of years ago. This divergence led to the development of specialized traits, such as its elongated finger for tapping and extracting insects from tree bark.

Through natural selection, the aye-aye’s adaptations suited its nocturnal insectivore lifestyle in Madagascar’s forests. However, these traits have also made it vulnerable to habitat loss and human impact, prompting conservation concerns.

Studying the aye-aye’s evolution sheds light on the evolutionary processes of isolated populations and underscores the importance of its preservation within Madagascar’s unique ecosystem.

Behavior and Lifestyle

The aye-aye (Daubentonia madagascariensis) exhibits nocturnal behavior, being most active during the night while resting during the day in tree nests. Its solitary nature is evident through its cautious and elusive demeanor.

The aye-aye’s specialized foraging technique involves using its elongated middle finger to tap on trees, listening for insect movements, and extracting prey from bark. This distinctive behavior contributes to its role as a nocturnal predator in Madagascar’s ecosystems.

Scientific Classification

  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Primates
  • Suborder: Strepsirrhini
  • Infraorder: Lemuriformes
  • Superfamily:  Lemuroidea
  • Family: Daubentoniidae
  • Genus: Daubentonia
  • Species: Daubentonia madagascariensis


  • Anjajavy Forest
  • Analamera Classified Forest
  • Daraina Forest
  • Lokobe Forest
  • Mananara Nord National Park
  • Marojejy National Park
  • Masoala National Park
  • Tsaratanana Reserve
  • Zahamena National Park
  • Andasibe-Mantadia National Park

Fast Facts

  • Scientific Name: Daubentonia madagascariensis
  • Habitat: Rainforests of Madagascar
  • Diet: Primarily insectivorous, feeding on insects and grubs
  • Nocturnal: Active during the night
  • Adaptations: Specialized elongated finger for tapping and extracting insects
  • Endangered Status: Classified as Near Threatened by the IUCN
  • Lifespan: 20 years
  • Social Behavior: Solitary and arboreal
  • Size: About 14-17 inches (36-43 cm).
  • Conservation: Protected by law in Madagascar, conservation efforts are ongoing.
  • Fun Facts: The aye-aye is known for its unique long, bony finger used to tap on trees and extract insects—a behavior seen in no other primate.

Aye-aye Physical Characteristics

  • Color: Dark brown fur with a white patch on its back.
  • Skin Type: Fur-covered.
  • Top Speed: Slow-moving, not known for high speeds.
  • Lifespan: Up to 20 years in the wild.
  • Weight: Around 4.4 to 5.0 pounds (2 to 2.3 kilograms).
  • Length: About 14-17 inches (36-43 cm), excluding the tail.
  • Age of Sexual Maturity: Typically around 2 to 3 years.
  • Age of Weaning: Weaned at around 7 to 9 months of age.

Aye-aye FAQs

What is the aye-aye’s unique feature?

The aye-aye is known for its elongated, bony middle finger, which it uses to tap on trees and extract insects.

Where is the aye-aye found?

The aye-aye is native to Madagascar and can be found in various rainforests and protected areas on the island.

Is the aye-aye endangered?

Yes, the aye-aye is classified as Near Threatened by the IUCN due to habitat loss and hunting.

What does the aye-aye eat?

The aye-aye is primarily insectivorous, feeding on insects and grubs. It uses its unique finger to locate and extract prey from tree bark.

Is the aye-aye nocturnal?

Yes, the aye-aye is nocturnal, meaning it is active during the night and rests during the day in tree nests.

How big is the aye-aye?

The aye-aye is about 14-17 inches (36-43 cm) in length, excluding its bushy tail, and weighs around 4.4 to 5.0 pounds (2 to 2.3 kilograms).

How long do aye-ayes live?

Aye-ayes can live up to 20 years in the wild.

Are aye-ayes social animals?

Aye-ayes are generally solitary animals and are known for their cautious and elusive behavior.

Why are aye-ayes considered unique among primates?

Aye-ayes are unique due to their specialized foraging technique, their distinct appearance, and their solitary and nocturnal habits.

How do aye-ayes contribute to their ecosystem?

Aye-ayes play a role in controlling insect populations and potentially aiding in pollination as they feed on nectar and fruits.

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