Black Howler Monkey vs Gray-bellied Night Monkey

Alouatta pigra compared with Aotus lemurinus

Key Differences

• Black Howler Monkey is Endangered while Gray-bellied Night Monkey is Vulnerable.

Taxonomic Classification

Rank	Black Howler Monkey	Gray-bellied Night Monkey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Primates (Primates)	Primates (Primates)
Family	Atelidae	Aotidae
Genus	Alouatta	Aotus
Species	Alouatta pigra	Aotus lemurinus

Evolutionary Relationship

Black Howler Monkey and Gray-bellied Night Monkey share a common ancestor at the Order level: Primates. (Primates)

Conservation Status

Black Howler Monkey

EN — Endangered

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

Attribute	Black Howler Monkey	Gray-bellied Night Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Howler Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Gray-bellied Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.