Gray-bellied Night Monkey vs Niceforo Maria’s Oldfield Mouse

Aotus lemurinus compared with Thomasomys nicefori

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Primates (bộ Linh trưởng)	Rodentia (Bộ Gặm nhấm)
Family	Aotidae	Cricetidae
Genus	Aotus	Thomasomys
Species	Aotus lemurinus	Thomasomys nicefori

Evolutionary Relationship

Gray-bellied Night Monkey and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Niceforo Maria’s Oldfield Mouse
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.

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia