Big Water Crayfish vs Eurasian beaver

Cambarus robustus compared with Castor fiber

Key Differences

• Big Water Crayfish is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

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

Evolutionary Relationship

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

Conservation Status

Big Water Crayfish

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Big Water Crayfish	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Water Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found in United States.

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.

Big Water Crayfish

The Big Water Crayfish (Cambarus robustus) is a species in the genus Cambarus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine, freshwater, and terrestrial environments.

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.