Caatinga laucha vs Eurasian beaver

Calomys expulsus compared with Castor fiber

Key Differences

• Caatinga laucha is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Caatinga laucha	Eurasian beaver
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	Cricetidae	Castoridae (Beavers)
Genus	Calomys	Castor (Beavers)
Species	Calomys expulsus	Castor fiber

Evolutionary Relationship

Caatinga laucha and Eurasian beaver share a common ancestor at the Order level: Rodentia. (啮齿目)

Conservation Status

Caatinga laucha

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Caatinga laucha	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Caatinga laucha

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Caatinga laucha

The Caatinga laucha (Calomys expulsus) is a species in the genus Calomys. It is currently classified as Least Concern on the IUCN Red List. 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。