Gray-bellied Night Monkey vs Napo Slender-legged Treefrog

Aotus lemurinus compared with Osteocephalus fuscifacies

Key Differences

• Gray-bellied Night Monkey is Vulnerable while Napo Slender-legged Treefrog is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Night Monkey	Napo Slender-legged Treefrog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Primates (Primates)	Anura (Frogs & Toads)
Family	Aotidae	Hylidae
Genus	Aotus	Osteocephalus
Species	Aotus lemurinus	Osteocephalus fuscifacies

Evolutionary Relationship

Gray-bellied Night Monkey and Napo Slender-legged Treefrog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray-bellied Night Monkey

VU — Vulnerable

Napo Slender-legged Treefrog

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Night Monkey	Napo Slender-legged Treefrog
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.

Napo Slender-legged Treefrog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.