Black-headed Night Monkey vs Eurasian beaver

Aotus nigriceps compared with Castor fiber

Key Differences

• Black-headed Night Monkey is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Black-headed Night Monkey	Eurasian beaver
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	Primates (サル目)	Rodentia (ネズミ目)
Family	Aotidae	Castoridae (Beavers)
Genus	Aotus	Castor (Beavers)
Species	Aotus nigriceps	Castor fiber

Evolutionary Relationship

Black-headed Night Monkey and Eurasian beaver share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Black-headed Night Monkey

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Black-headed Night Monkey	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-headed Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable 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.

Eurasian beaver

ユーラシアビーバー（Castor fiber）はIUCNレッドリストで絶滅危惧II類（VU）に分類されています。個体群の減少と生息地への圧力の増大により、野生での絶滅危険度が高い状況に直面しています。