Eurasian beaver vs Harmless Serotine

Castor fiber compared with Eptesicus innoxius

Key Differences

• Eurasian beaver is Vulnerable while Harmless Serotine is Near Threatened.

Taxonomic Classification

Rank	Eurasian beaver	Harmless Serotine
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)	Chiroptera (翼手目)
Family	Castoridae (Beavers)	Vespertilionidae
Genus	Castor (Beavers)	Eptesicus
Species	Castor fiber	Eptesicus innoxius

Evolutionary Relationship

Eurasian beaver and Harmless Serotine share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Eurasian beaver

VU — Vulnerable

Harmless Serotine

NT — Near Threatened

Physical Characteristics

Attribute	Eurasian beaver	Harmless Serotine
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.

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in 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。