The Indri indri, commonly known as the indri, is the largest living lemur species. Native to Madagascar's rainforests, it features striking black and white fur, long limbs, and a short tail. Known for its powerful, eerie vocalizations, the indri's calls can be heard over great distances. It primarily feeds on leaves and fruits.

Indri indri, commonly known as the indri or babakoto, is native to the northeastern region of Madagascar. This species is endemic to this island nation, meaning it is found nowhere else in the world. Its distribution is primarily concentrated in the rainforests of Madagascar, specifically within the regions of Analamanga, Alaotra-Mangoro, Atsinanana, and Sava.

The indri inhabits tropical moist broadleaf forests, which are characterized by high humidity and substantial rainfall throughout the year. These forests are dense and provide ample food sources and shelter. The climate in these regions is typically warm and humid, with temperature variations depending on altitude.

Indris play a crucial role in their ecosystem as folivores, primarily feeding on leaves, but also consuming fruits, flowers, and seeds. They are arboreal and diurnal, spending most of their lives in the forest canopy where they move by leaping between trees. This lifestyle helps in seed dispersal, contributing to forest regeneration. Indris have adapted to living in the forest canopy with their powerful hind legs and specialized vocalizations for communication across dense foliage.