Eurasian beaver vs Flat Periwinkle

Castor fiber compared with Littorina obtusata

Key Differences

• Eurasian beaver is Vulnerable while Flat Periwinkle is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Flat Periwinkle
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Mollusca (軟体動物)
Class	Mammalia (哺乳類)	Gastropoda (腹足綱)
Order	Rodentia (ネズミ目)	Littorinimorpha (タマキビガイ下目)
Family	Castoridae (Beavers)	Littorinidae
Genus	Castor (Beavers)	Littorina
Species	Castor fiber	Littorina obtusata

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Flat Periwinkle

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Flat Periwinkle
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.

Flat Periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden