CreatureData

Brown howler

Alouatta guariba (Humboldt, 1812)

VUVulnerableprimates

The brown howler (Alouatta guariba) is a species in the family Atelidae, order Primates. Recorded adults weigh about 5.19 kg and live up to 13.8 years. Its IUCN Red List status is Vulnerable.

Brown howler (Alouatta guariba)
Photo: Dario Sanches from SÃO PAULO, BRASIL · CC BY-SA 2.0 · Wikimedia Commons

Quick facts about the brown howler

Weight
5.19 kgsrc for Weight
Length
Not recorded
Lifespan
13.8 yearssrc for Lifespan
Diet
Herbivoresrc for Diet
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Active
By day (diurnal)src for Active
Lifestyle
Arborealsrc for Lifestyle
Conservation status
Vulnerable (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the brown howler live?

Not recorded

What is the brown howler?

Quoted from WikipediaCC BY-SA 4.0

The brown howler (Alouatta guariba), also known as brown howler monkey, is a species of howler monkey, a type of New World monkey that lives in forests in south-eastern Brazil and far north-eastern Argentina (Misiones). It lives in groups of two to 11 individuals. Despite the name "brown howler", it is notably variable in colour, with some individuals appearing largely reddish-orange or black.

The two subspecies are:

Northern brown howler (A. g. guariba), listed as critically endangered

Southern brown howler (A. g. clamitans)

From the Wikipedia article “Brown howler” (en.wikipedia.org/w/index.php?title=Brown_howler&oldid=1356899746), 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 brown howler endangered?

The brown howler 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 brown howler classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderPrimates
  5. familyAtelidae
  6. genusAlouatta
  7. SpeciesAlouatta guariba (Humboldt, 1812)

Synonyms Simia guariba

Other names and names in other languages (33)
  • Brown howler monkeyEnglish
  • Brown howler monkeyEnglish
  • Brown howling monkeyEnglish
  • Brown howling monkeyEnglish
  • Brown howling monkeyEnglish
  • Southern brown howling monkeyEnglish
  • Southern brown howling monkeyEnglish
  • عواء بنيArabic
  • vřešťan hnědýCzech
  • Brauner BrüllaffeGerman
  • Nördlicher Brauner BrüllaffeGerman
  • Καφέ ΜυκητήςGreek
  • AulladorSpanish
  • Aullador rojoSpanish
  • Guariba MarrónSpanish
  • Mono aulador pardoSpanish
  • ruskomölyapinaFinnish
  • Hurleur BrunFrench
  • Singe hurleur brunFrench
  • barna bőgőmajomHungarian
  • Aluatta brunaItalian
  • Scimmia urlatrice neraItalian
  • カッショクホエザルJapanese
  • BrunbrølapeNorwegian Bokmål
  • Bruine BrulaapDutch
  • wyjec brązowyPolish
  • BugioPortuguese
  • BarbadoPortuguese
  • Barbado-VermelhoPortuguese
  • Bugio-RuivoPortuguese
  • GuaribaPortuguese
  • Бурый ревунRussian
  • Kahverengi uluyan maymunuTurkish

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the brown howler

Other species in the same genus Alouatta.

CompareBrown howler vs Colombian red howlerBrown howler vs Black howlerBrown howler vs Yucatán black howlerBrown howler vs Mantled howler

Common questions

Answered only where our data holds the answer.

How big is the brown howler?

An adult brown howler weighs 5.19 kg, according to values recorded on Wikidata.

Is the brown howler endangered?

The brown howler is listed as Vulnerable on the IUCN Red List, meaning it faces a high risk of extinction in the wild.

How long does the brown howler live?

The brown howler has a recorded lifespan of 13.8 years.

What kind of animal is the brown howler?

The brown howler (Alouatta guariba) belongs to the family Atelidae 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). Brown howler (Alouatta guariba). Retrieved from https://creaturedata.com/animals/brown-howler

MLA

“Brown howler (Alouatta guariba).” CreatureData, 2026, https://creaturedata.com/animals/brown-howler.

BibTeX
@misc{brown_howler_2026,
  title = {Brown howler (Alouatta guariba)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/brown-howler},
  note = {Data as of 2026-11-11}
}