Eurasian beaver vs Marbled Minor

Castor fiber compared with Oligia strigilis

Key Differences

• Eurasian beaver is Vulnerable while Marbled Minor is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Marbled Minor
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Lepidoptera (Butterflies & Moths)
Family	Castoridae (Beavers)	Noctuidae
Genus	Castor (Beavers)	Oligia
Species	Castor fiber	Oligia strigilis

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Marbled Minor

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Marbled Minor
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.

Marbled Minor

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, 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 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden