Big Brown Bat vs Eurasian beaver

Eptesicus fuscus compared with Castor fiber

Key Differences

• Big Brown Bat is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Big Brown Bat	Eurasian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Chiroptera (Bats)	Rodentia (Rodents)
Family	Vespertilionidae	Castoridae (Beavers)
Genus	Eptesicus	Castor (Beavers)
Species	Eptesicus fuscus	Castor fiber

Evolutionary Relationship

Big Brown Bat and Eurasian beaver share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Big Brown Bat

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Big Brown Bat	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Brown Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Colombia, Ecuador, United States, and Venezuela.

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 Brown Bat

The Big Brown Bat (Eptesicus fuscus) is a species in the genus Eptesicus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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:

🇧🇪 Belgium