Black Howler Monkey vs Macaco-de-cheiro

Alouatta pigra compared with Saimiri collinsi

Key Differences

• Black Howler Monkey is Endangered while Macaco-de-cheiro is Least Concern.

Taxonomic Classification

Rank	Black Howler Monkey	Macaco-de-cheiro
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order same	Primates (primatas)	Primates (primatas)
Family	Atelidae	Cebidae
Genus	Alouatta	Saimiri
Species	Alouatta pigra	Saimiri collinsi

Evolutionary Relationship

Black Howler Monkey and Macaco-de-cheiro share a common ancestor at the Order level: Primates. (primatas)

Conservation Status

Black Howler Monkey

EN — Endangered

Macaco-de-cheiro

LC — Least Concern

Physical Characteristics

Attribute	Black Howler Monkey	Macaco-de-cheiro
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Howler Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Macaco-de-cheiro

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Black Howler Monkey

The Black Howler Monkey (Alouatta pigra) is a species in the genus Alouatta. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Macaco-de-cheiro

<em>Saimiri collinsi</em>, commonly known as Collins' Squirrel Monkey, is a primate species belonging to the genus <em>Saimiri</em> within the family Cebidae. Squirrel monkeys are small, highly social New World primates known for their agility in forest canopies and their complex group dynamics. This species is assessed as Least Concern by major conservation bodies, indicating that its populations are not currently considered at high risk of decline, though ongoing deforestation and habitat fragmentation in Amazonian regions may affect future population stability. Collins' Squirrel Monkey inhabits diverse terrestrial and aquatic-adjacent environments typical of tropical forest ecosystems in South America. Specific country-level distributional records are not detailed in current documentation. Dietary information specific to this species has not been recorded, though squirrel monkeys in general are omnivorous, consuming insects, small vertebrates, fruits, and other plant material. Biological traits of this species remain poorly documented in the scientific literature. Research into the taxonomy and ecology of <em>Saimiri collinsi</em> continues to refine understanding of squirrel monkey diversity.