Eurasian beaver vs Gray Mouse Opossum

Castor fiber compared with Tlacuatzin canescens

Key Differences

• Eurasian beaver is Vulnerable while Gray Mouse Opossum is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Gray Mouse Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Didelphimorphia (Didelphimorphia)
Family	Castoridae (Beavers)	Didelphidae
Genus	Castor (Beavers)	Tlacuatzin
Species	Castor fiber	Tlacuatzin canescens

Evolutionary Relationship

Eurasian beaver and Gray Mouse Opossum share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Gray Mouse Opossum

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Gray Mouse Opossum
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.

Gray Mouse Opossum

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.