---
title: "Brown Howler Monkey"
description: "Alouatta guariba — Mammals. 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)."
canonical: https://animalchecklist.com/animal/brown-howler-monkey
last_updated: 2026-09-20
---

# Brown Howler Monkey

> Alouatta guariba — Mammals. 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).

- Scientific name: *Alouatta guariba*
- Category: `mammals` (Mammals)
- Habitats: `forest` (Forest), `jungle` (Jungle)
- iNaturalist observations: 1588
- Wikidata: [Q790592](https://www.wikidata.org/wiki/Q790592)
- iNaturalist taxon: [74053](https://www.inaturalist.org/taxa/74053)

## Names

- en: Brown Howler Monkey
- de: Brauner Brüllaffe
- es: Aullador rojo
- fr: Singe hurleur brun
- pt: Bugio-ruivo
- pl: Wyjec brązowy

## Countries with the most observations

BR (1494), AR (7)

## Summary

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)

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Brown_howler

## Photo

![Brown Howler Monkey](https://animalchecklist.com/img/animals/brown-howler-monkey/medium.jpg)

Photo: Paula Romano · CC0 · inaturalist — https://www.inaturalist.org/observations/379680864

## Machine access

`GET https://animalchecklist.com/api/v1/animals/brown-howler-monkey?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).