Eurasian beaver vs Sly Crayfish

Castor fiber compared with Procambarus versutus

Key Differences

• Eurasian beaver is Vulnerable while Sly Crayfish is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Sly 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)	Procambarus
Species	Castor fiber	Procambarus versutus

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Sly Crayfish

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Sly 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.

Sly Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found in Norway.

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 1 countries:

🇳🇴 Norway