# Indri (*Indri indri*)

Canonical page: https://creaturedata.com/animals/indri  
Data as of: 2026-11-11

The indri (Indri indri), also called the indri lemur, is a primate of the family Indriidae, in the superfamily Lemuroidea and suborder Strepsirrhini. It is a medium-sized mammal with an adult body mass of 8 kg, and up to 8.2 kg. The indri is a diurnal, arboreal herbivore. It is listed as Critically Endangered on the IUCN Red List, an IUCN threatened category.

## Quick facts

| Fact | Value |
|---|---|
| Weight | 8 kg – 8.24 kg |
| Length | 64 cm – 72 cm |
| Lifespan | Not recorded |
| Diet | Herbivore |
| Main food | leaves |
| Habitat | Not recorded |
| Gestation | 142 days – 150 days |
| Young per litter or clutch | 1.01 |
| Age at maturity | 6.2 years |
| Litters or clutches a year | 0.41 |
| Active | By day (diurnal) |
| Lifestyle | Arboreal |
| Conservation status | Critically Endangered (IUCN) |
| Countries on record | Not recorded |

## Classification

- kingdom: Animalia
- phylum: Chordata
- class: Mammalia
- order: Primates
- family: Indriidae
- genus: Indri
- species: *Indri indri* (Gmelin, 1788)

Synonyms: *Indri brevicaudatus*, *Indri indri indri*, *Indri indri variegatus*, *Indri niger*, *Indris ater*, *Lichanotus mitratus*

## Common questions

### What kind of animal is the indri?

The indri is a mammal, a primate of the family Indriidae in the superfamily Lemuroidea.

### How heavy is the indri?

An adult Indri weighs 8 kg, and up to 8.2 kg, which places it in the medium size class.

### What does the indri eat?

The indri is a herbivore.

### Is the indri endangered?

Yes. The indri is listed as Critically Endangered on the IUCN Red List, an IUCN threatened category.

### Is the indri active during the day?

Yes. The indri is diurnal and arboreal.

### How many young does the indri have?

The indri has 1 young per litter, with 0.41 litters per year and a gestation period of 142.1 days.

### When does the indri reach sexual maturity?

The indri reaches sexual maturity at 6.2 years (2,264 days).

## Sources

- [An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles](https://doi.org/10.6084/m9.figshare.3563457.v1), CC0 1.0, E096-269. Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1
- [Catalogue of Life eXtended Release](https://www.checklistbank.org/dataset/316691), CC BY 4.0, 2026-10-16 XR. Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf
- [Wikimedia Commons](https://commons.wikimedia.org), per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed), 2026-11-11. Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence).
- [EltonTraits 1.0: species-level foraging attributes of the world's birds and mammals](https://doi.org/10.6084/m9.figshare.3559887.v1), CC0 1.0, 1.0. Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1
- [Wikidata](https://www.wikidata.org), CC0 1.0, 2026-11-11. Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service).
- [Wikipedia (English)](https://en.wikipedia.org), CC BY-SA 4.0, 2026-11-11. Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).

Cite as: Indri (Indri indri). Retrieved from https://creaturedata.com/animals/indri