Eurasian beaver vs Rust-blotch Cosmet

Castor fiber compared with Mompha lacteella

Key Differences

• Eurasian beaver is Vulnerable while Rust-blotch Cosmet is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Rust-blotch Cosmet
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)	Momphidae
Genus	Castor (Beavers)	Mompha
Species	Castor fiber	Mompha lacteella

Evolutionary Relationship

Eurasian beaver and Rust-blotch Cosmet share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Rust-blotch Cosmet

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Rust-blotch Cosmet
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.

Rust-blotch Cosmet

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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