Eurasian beaver vs Hotson’s Brush-tailed Mouse

Castor fiber compared with Calomyscus hotsoni

Key Differences

• Eurasian beaver is Vulnerable while Hotson’s Brush-tailed Mouse is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Hotson’s Brush-tailed Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Rodentia (Rodents)	Rodentia (Rodents)
Family	Castoridae (Beavers)	Calomyscidae
Genus	Castor (Beavers)	Calomyscus
Species	Castor fiber	Calomyscus hotsoni

Evolutionary Relationship

Eurasian beaver and Hotson’s Brush-tailed Mouse share a common ancestor at the Order level: Rodentia. (Rodents)

Conservation Status

Eurasian beaver

VU — Vulnerable

Hotson’s Brush-tailed Mouse

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Hotson’s Brush-tailed Mouse
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.

Hotson’s Brush-tailed Mouse

Habitat

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.