CreatureData

Gray-bellied night monkey

Aotus lemurinus I. Geoffroy Saint-Hilaire, 1843

VUVulnerableprimates

The gray-bellied night monkey (Aotus lemurinus) is a species in the family Aotidae, order Primates. Recorded adults weigh 800 g to 874 g and live up to 31.8 years. Its IUCN Red List status is Vulnerable.

Gray-bellied night monkey (Aotus lemurinus)
Photo: Esteban Villa Restrepo · CC BY-SA 4.0 · Wikimedia Commons

Quick facts about the gray-bellied night monkey

Weight
800 g – 874 gsrc for Weight
Length
Not recorded
Lifespan
31.8 yearssrc for Lifespan
Diet
Herbivoresrc for Diet
Longest recorded lifespan
33.8 years
Main food
Not recorded
Habitat
Not recorded
Gestation
135 dayssrc for Gestation
Young per litter or clutch
1src for Young per litter or clutch
Age at maturity
2.07 yearssrc for Age at maturity
Litters or clutches a year
1src for Litters or clutches a year
Active
At night (nocturnal)src for Active
Lifestyle
Arborealsrc for Lifestyle
Conservation status
Vulnerable (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the gray-bellied night monkey live?

Not recorded

What is the gray-bellied night monkey?

Quoted from WikipediaCC BY-SA 4.0

The gray-bellied night monkey (Aotus lemurinus), also called the grey-legged douroucouli or lemurine owl monkey, is a small New World monkey of the family Aotidae. Native to tropical and subtropical forests of South America, the gray-bellied night monkey faces a significant threat from hunting, harvesting for use in pharmaceutical research and habitat destruction.

From the Wikipedia article “Gray-bellied night monkey” (en.wikipedia.org/w/index.php?title=Gray-bellied_night_monkey&oldid=1379698554), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

Is the gray-bellied night monkey endangered?

The gray-bellied night monkey is listed as Vulnerable on the IUCN Red List: it faces a high risk of extinction in the wild.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Vulnerable species.

How is the gray-bellied night monkey classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderPrimates
  5. familyAotidae
  6. genusAotus
  7. SpeciesAotus lemurinus I. Geoffroy Saint-Hilaire, 1843

Synonyms Aotus aversus, Aotus hershkovitzi, Aotus lanius, Aotus pervigilis, Nyctipithecus hirsutus, Nyctipithecus villosus

Other names and names in other languages (24)
  • Colombian night monkeyEnglish
  • Colombian night monkeyEnglish
  • Colombian night monkeyEnglish
  • Lemurine night monkeyEnglish
  • Lemurine night monkeyEnglish
  • قرد الليل ذو البطن الرماديArabic
  • mirikina lemuříCzech
  • Kolumbianischer NachtaffeGerman
  • Νυχτοπίθηκος της ΚολομβίαςGreek
  • MartejaSpanish
  • Mico De Noche AndinoSpanish
  • mico dormilónSpanish
  • Mono NocturnoSpanish
  • Mono nocturno lemurinoSpanish
  • mäkiyöapinaFinnish
  • panamanyöapinaFinnish
  • Douroucouli lémurienFrench
  • szürke kezű éji majomHungarian
  • コロンビアヨザルJapanese
  • GrijsbuiknachtaapjeDutch
  • ponocnica lemurowataPolish
  • Macaco-da-noite-cinzentoPortuguese
  • Macaco-da-noite-da-colômbiaPortuguese
  • 鬼夜猴Chinese

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the gray-bellied night monkey

Other species in the same genus Aotus.

CompareGray-bellied night monkey vs Three-striped night monkeyGray-bellied night monkey vs Azara's night monkeyGray-bellied night monkey vs Peruvian night monkeyGray-bellied night monkey vs Black-headed night monkey

Common questions

Answered only where our data holds the answer.

How big is the gray-bellied night monkey?

An adult gray-bellied night monkey weighs 800 g – 874 g, according to values recorded on Wikidata.

Is the gray-bellied night monkey endangered?

The gray-bellied night monkey is listed as Vulnerable on the IUCN Red List, meaning it faces a high risk of extinction in the wild.

How long does the gray-bellied night monkey live?

The gray-bellied night monkey has a recorded lifespan of 31.8 years.

How long is the gray-bellied night monkey pregnant?

The recorded gestation period is 135 days.

What kind of animal is the gray-bellied night monkey?

The gray-bellied night monkey (Aotus lemurinus) belongs to the family Aotidae in the order Primates.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Gray-bellied night monkey (Aotus lemurinus). Retrieved from https://creaturedata.com/animals/gray-bellied-night-monkey

MLA

“Gray-bellied night monkey (Aotus lemurinus).” CreatureData, 2026, https://creaturedata.com/animals/gray-bellied-night-monkey.

BibTeX
@misc{gray_bellied_night_monkey_2026,
  title = {Gray-bellied night monkey (Aotus lemurinus)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/gray-bellied-night-monkey},
  note = {Data as of 2026-11-11}
}