# Spix's night monkey (*Aotus vociferans*)

Canonical page: https://creaturedata.com/animals/spixs-night-monkey  
Data as of: 2026-11-11

The spix's night monkey (Aotus vociferans) is a species in the family Aotidae, order Primates. Recorded adults weigh about 873 g and live up to 22.1 years. Its IUCN Red List status is Least Concern.

## Quick facts

| Fact | Value |
|---|---|
| Weight | 873 g |
| Length | Not recorded |
| Lifespan | 22.1 years |
| Diet | Herbivore |
| Longest recorded lifespan | 22.1 years |
| Main food | Not recorded |
| Habitat | Not recorded |
| Young per litter or clutch | 1.02 |
| Active | At night (nocturnal) |
| Lifestyle | Arboreal |
| Conservation status | Least Concern (IUCN) |
| Countries on record | Not recorded |

## Classification

- kingdom: Animalia
- phylum: Chordata
- class: Mammalia
- order: Primates
- family: Aotidae
- genus: Aotus
- species: *Aotus vociferans* (Spix, 1823)

Synonyms: *Aotus gularis*, *Aotus microdon*, *Nyctipithecus oseryi*, *Nyctipithecus rufipes*, *Nyctipithecus spixi*, *Nyctipithecus vociferans*

## Common questions

### How big is the spix's night monkey?

An adult spix's night monkey weighs 873 g, according to values recorded on Wikidata.

### Is the spix's night monkey endangered?

The spix's night monkey is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.

### How long does the spix's night monkey live?

The spix's night monkey has a recorded lifespan of 22.1 years.

### What kind of animal is the spix's night monkey?

The spix's night monkey (Aotus vociferans) belongs to the family Aotidae in the order Primates.

## 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: Spix's night monkey (Aotus vociferans). Retrieved from https://creaturedata.com/animals/spixs-night-monkey