Eurasian beaver vs hydroid

Castor fiber compared with Nemertesia ramosa

Key Differences

• Eurasian beaver is Vulnerable while hydroid is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	hydroid
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Cnidaria (刺胞動物)
Class	Mammalia (哺乳類)	Hydrozoa (ヒドロ虫綱)
Order	Rodentia (ネズミ目)	Leptothecata (軟クラゲ目)
Family	Castoridae (Beavers)	Plumulariidae
Genus	Castor (Beavers)	Nemertesia
Species	Castor fiber	Nemertesia ramosa

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

hydroid

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	hydroid
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.

hydroid

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Portugal, 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 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden