Eurasian beaver vs Stone Crayfish

Castor fiber compared with Austropotamobius torrentium

Key Differences

• Eurasian beaver is Vulnerable while Stone Crayfish is Data Deficient.

Taxonomic Classification

Rank	Eurasian beaver	Stone Crayfish
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Arthropoda (節足動物)
Class	Mammalia (哺乳類)	Malacostraca (軟甲綱)
Order	Rodentia (ネズミ目)	Decapoda (十脚目)
Family	Castoridae (Beavers)	Astacidae
Genus	Castor (Beavers)	Austropotamobius
Species	Castor fiber	Austropotamobius torrentium

Evolutionary Relationship

Eurasian beaver and Stone Crayfish share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Eurasian beaver

VU — Vulnerable

Stone Crayfish

DD — Data Deficient

Physical Characteristics

Attribute	Eurasian beaver	Stone Crayfish
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.

Stone Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

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。