Eurasian beaver vs Patagonian Weasel

Castor fiber compared with Lyncodon patagonicus

Key Differences

• Eurasian beaver is Vulnerable while Patagonian Weasel is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Patagonian Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Carnivora (Carnivorans)
Family	Castoridae (Beavers)	Mustelidae (Weasels & Otters)
Genus	Castor (Beavers)	Lyncodon
Species	Castor fiber	Lyncodon patagonicus

Evolutionary Relationship

Eurasian beaver and Patagonian Weasel share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Patagonian Weasel

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Patagonian Weasel
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.

Patagonian Weasel

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.