Gray-bellied Night Monkey vs Olive-gray Thomasomys

Aotus lemurinus compared with Thomasomys cinereus

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Olive-gray Thomasomys is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Olive-gray Thomasomys
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	Thomasomys
Species	Aotus lemurinus	Thomasomys cinereus

Evolutionary Relationship

Gray-bellied Night Monkey and Olive-gray Thomasomys share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Olive-gray Thomasomys

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Olive-gray Thomasomys
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.

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Shared Countries

Both species can be found in 1 countries:

🇪🇨 Ecuador