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 (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Rodentia (啮齿目)	Primates (灵长目)
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. (哺乳動物)

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

欧亚河狸（Castor fiber）在IUCN红色名录中被列为易危（VU）。面临野外高度濒危风险，种群数量下降，栖息地压力日益增大。