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 (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)	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. (哺乳類)

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

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。