Eurasian beaver vs Speckled ray

Castor fiber compared with Raja polystigma

Key Differences

• Eurasian beaver is Vulnerable while Speckled ray is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Speckled ray
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)	Raja
Species	Castor fiber	Raja polystigma

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Speckled ray

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Speckled ray
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.

Speckled ray

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。