Eurasian beaver vs Rusty Crayfish

Castor fiber compared with Faxonius rusticus

Key Differences

• Eurasian beaver is Vulnerable while Rusty Crayfish is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	Rusty Crayfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Malacostraca (Crustaceans)
Order	Rodentia (Rodents)	Decapoda (Decapoda)
Family	Castoridae (Beavers)	Cambaridae
Genus	Castor (Beavers)	Faxonius
Species	Castor fiber	Faxonius rusticus

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Rusty Crayfish

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	Rusty 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.

Rusty Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Distributed across Denmark, Norway, Sweden, and 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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden