Eurasian beaver vs Williamson's Mouse-deer

Castor fiber compared with Tragulus williamsoni

Key Differences

• Eurasian beaver is Vulnerable while Williamson's Mouse-deer is Data Deficient.

Taxonomic Classification

Rank	Eurasian beaver	Williamson's Mouse-deer
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Artiodactyla (Even-toed Ungulates)
Family	Castoridae (Beavers)	Tragulidae
Genus	Castor (Beavers)	Tragulus
Species	Castor fiber	Tragulus williamsoni

Evolutionary Relationship

Eurasian beaver and Williamson's Mouse-deer share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Williamson's Mouse-deer

DD — Data Deficient

Physical Characteristics

Attribute	Eurasian beaver	Williamson's Mouse-deer
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.

Williamson's Mouse-deer

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.