Eurasian beaver vs Little Black Serotine

Castor fiber compared with Eptesicus andinus

Key Differences

• Eurasian beaver is Vulnerable while Little Black Serotine is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Little Black Serotine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Chiroptera (Bats)
Family	Castoridae (Beavers)	Vespertilionidae
Genus	Castor (Beavers)	Eptesicus
Species	Castor fiber	Eptesicus andinus

Evolutionary Relationship

Eurasian beaver and Little Black Serotine share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Little Black Serotine

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Little Black Serotine
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.

Little Black Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

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.