Eurasian beaver vs Greater Pencil-tailed Tree Mouse

Castor fiber compared with Chiropodomys major

Key Differences

• Eurasian beaver is Vulnerable while Greater Pencil-tailed Tree Mouse is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Greater Pencil-tailed Tree Mouse
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order same	Rodentia (啮齿目)	Rodentia (啮齿目)
Family	Castoridae (Beavers)	Muridae (Mice & Rats)
Genus	Castor (Beavers)	Chiropodomys
Species	Castor fiber	Chiropodomys major

Evolutionary Relationship

Eurasian beaver and Greater Pencil-tailed Tree Mouse share a common ancestor at the Order level: Rodentia. (啮齿目)

Conservation Status

Eurasian beaver

VU — Vulnerable

Greater Pencil-tailed Tree Mouse

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Greater Pencil-tailed Tree 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.

Greater Pencil-tailed Tree Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Eurasian beaver

欧亚河狸（Castor fiber）在IUCN红色名录中被列为易危（VU）。面临野外高度濒危风险，种群数量下降，栖息地压力日益增大。