Gray-bellied Night Monkey vs Sumatran orangutan

Aotus lemurinus compared with Pongo abelii

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Sumatran orangutan is Critically Endangered.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Sumatran orangutan
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order same	Primates (サル目)	Primates (サル目)
Family	Aotidae	Hominidae (Great Apes)
Genus	Aotus	Pongo (Orangutans)
Species	Aotus lemurinus	Pongo abelii

Evolutionary Relationship

Gray-bellied Night Monkey and Sumatran orangutan share a common ancestor at the Order level: Primates. (サル目)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Sumatran orangutan

CR — Critically Endangered

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Sumatran orangutan
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.

Sumatran orangutan

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.