Eurasian beaver vs Polychaete

Castor fiber compared with Pileolaria militaris

Key Differences

• Eurasian beaver is Vulnerable while Polychaete is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	Polychaete
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Annelida (Segmented Worms)
Class	Mammalia (Mammals)	Polychaeta (Polychaeta)
Order	Rodentia (Rodents)	Sabellida (Sabellida)
Family	Castoridae (Beavers)	Serpulidae
Genus	Castor (Beavers)	Pileolaria
Species	Castor fiber	Pileolaria militaris

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Polychaete

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	Polychaete
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.

Polychaete

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (6 countries) and North America (United States).

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 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden