Eurasian beaver vs Humboldt's Squirrel Monkey

Castor fiber compared with Saimiri cassiquiarensis

Key Differences

• Eurasian beaver is Vulnerable while Humboldt's Squirrel Monkey is Near Threatened.

Taxonomic Classification

Rank	Eurasian beaver	Humboldt's Squirrel Monkey
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	Rodentia (ネズミ目)	Primates (サル目)
Family	Castoridae (Beavers)	Cebidae
Genus	Castor (Beavers)	Saimiri
Species	Castor fiber	Saimiri cassiquiarensis

Evolutionary Relationship

Eurasian beaver and Humboldt's Squirrel Monkey share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Eurasian beaver

VU — Vulnerable

Humboldt's Squirrel Monkey

NT — Near Threatened

Physical Characteristics

Attribute	Eurasian beaver	Humboldt's Squirrel Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Humboldt's Squirrel Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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。