Gray-bellied Night Monkey vs Simon s Spiny-rat

Aotus lemurinus compared with Proechimys simonsi

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Simon s Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Simon s Spiny-rat
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	Echimyidae
Genus	Aotus	Proechimys
Species	Aotus lemurinus	Proechimys simonsi

Evolutionary Relationship

Gray-bellied Night Monkey and Simon s Spiny-rat share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Simon s Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Simon s Spiny-rat
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.

Simon s Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇪🇨 Ecuador