Eurasian beaver vs thin-necked bladderworm

Castor fiber compared with Taenia hydatigena

Key Differences

• Eurasian beaver is Vulnerable while thin-necked bladderworm is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	thin-necked bladderworm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Platyhelminthes (Platyhelminthes)
Class	Mammalia (Mammals)	Cestoda (Cestoda)
Order	Rodentia (Rodents)	Cyclophyllidea (Cyclophyllidea)
Family	Castoridae (Beavers)	Taeniidae
Genus	Castor (Beavers)	Taenia
Species	Castor fiber	Taenia hydatigena

Evolutionary Relationship

Eurasian beaver and thin-necked bladderworm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

thin-necked bladderworm

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	thin-necked bladderworm
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.

thin-necked bladderworm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

Eurasian beaver

Eurasian beaver (Castor fiber) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden