Black-headed Night Monkey vs Cerro Pelón Treefrog

Aotus nigriceps compared with Sarcohyla calvicollina

Key Differences

• Black-headed Night Monkey is Least Concern while Cerro Pelón Treefrog is Critically Endangered.

Taxonomic Classification

Rank	Black-headed Night Monkey	Cerro Pelón Treefrog
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Amphibia (両生類)
Order	Primates (サル目)	Anura (カエル)
Family	Aotidae	Hylidae
Genus	Aotus	Sarcohyla
Species	Aotus nigriceps	Sarcohyla calvicollina

Evolutionary Relationship

Black-headed Night Monkey and Cerro Pelón Treefrog share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Black-headed Night Monkey

LC — Least Concern

Cerro Pelón Treefrog

CR — Critically Endangered

Physical Characteristics

Attribute	Black-headed Night Monkey	Cerro Pelón Treefrog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-headed Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Cerro Pelón Treefrog

Habitat

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

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Black-headed Night Monkey

The Black-headed Night Monkey (Aotus nigriceps) is a species in the genus Aotus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Cerro Pelón Treefrog

The Cerro Pelón Treefrog (Sarcohyla calvicollina) is a species in the genus Sarcohyla. It is currently classified as Critically Endangered on the IUCN Red List. Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.