Eurasian beaver vs Sailray

Castor fiber compared with Rajella lintea

Key Differences

• Eurasian beaver is Vulnerable while Sailray is Near Threatened.

Taxonomic Classification

Rank	Eurasian beaver	Sailray
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Elasmobranchii
Order	Rodentia (ネズミ目)	Rajiformes (ガンギエイ目)
Family	Castoridae (Beavers)	Rajidae
Genus	Castor (Beavers)	Rajella
Species	Castor fiber	Rajella lintea

Evolutionary Relationship

Eurasian beaver and Sailray share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Eurasian beaver

VU — Vulnerable

Sailray

NT — Near Threatened

Physical Characteristics

Attribute	Eurasian beaver	Sailray
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.

Sailray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden. 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。

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden