Altai Birch Mouse vs Brown Spider Monkey

Sicista napaea compared with Ateles hybridus

Key Differences

• Altai Birch Mouse is Least Concern while Brown Spider Monkey is Critically Endangered.

Taxonomic Classification

Rank	Altai Birch Mouse	Brown Spider Monkey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Primates (Primates)
Family	Dipodidae	Atelidae
Genus	Sicista	Ateles
Species	Sicista napaea	Ateles hybridus

Evolutionary Relationship

Altai Birch Mouse and Brown Spider Monkey share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Altai Birch Mouse

LC — Least Concern

Brown Spider Monkey

CR — Critically Endangered

Physical Characteristics

Attribute	Altai Birch Mouse	Brown Spider Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Altai Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Brown Spider Monkey

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia and Venezuela. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Altai Birch Mouse

The Altai Birch Mouse (Sicista napaea) is a species in the genus Sicista. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Brown Spider Monkey

The Brown Spider Monkey (Ateles hybridus) is a species in the genus Ateles. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the