Gray-bellied Night Monkey vs Narrow-headed Vole

Aotus lemurinus compared with Microtus gregalis

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Narrow-headed Vole is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Narrow-headed Vole
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Primates (Primates)	Rodentia (Rodents)
Family	Aotidae	Cricetidae
Genus	Aotus	Microtus
Species	Aotus lemurinus	Microtus gregalis

Evolutionary Relationship

Gray-bellied Night Monkey and Narrow-headed Vole share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Narrow-headed Vole

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Narrow-headed Vole
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Narrow-headed Vole

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.