Eurasian beaver vs Merriam’s Pocket Mouse

Castor fiber compared with Perognathus merriami

Key Differences

• Eurasian beaver is Vulnerable while Merriam’s Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Merriam’s Pocket Mouse
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mamalia)	Mammalia (mamalia)
Order same	Rodentia (hewan pengerat)	Rodentia (hewan pengerat)
Family	Castoridae (Beavers)	Heteromyidae
Genus	Castor (Beavers)	Perognathus
Species	Castor fiber	Perognathus merriami

Evolutionary Relationship

Eurasian beaver and Merriam’s Pocket Mouse share a common ancestor at the Order level: Rodentia. (hewan pengerat)

Conservation Status

Eurasian beaver

VU — Vulnerable

Merriam’s Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Merriam’s Pocket 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.

Merriam’s Pocket 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.