Eurasian beaver vs Japanese Weasel

Castor fiber compared with Mustela itatsi

Key Differences

• Eurasian beaver is Vulnerable while Japanese Weasel is Near Threatened.

Taxonomic Classification

Rank	Eurasian beaver	Japanese Weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Rodentia (Roedores)	Carnivora (carnívoros)
Family	Castoridae (Beavers)	Mustelidae (Weasels & Otters)
Genus	Castor (Beavers)	Mustela
Species	Castor fiber	Mustela itatsi

Evolutionary Relationship

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

Conservation Status

Eurasian beaver

VU — Vulnerable

Japanese Weasel

NT — Near Threatened

Physical Characteristics

Attribute	Eurasian beaver	Japanese 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.

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Eurasian beaver

O castor-europeu (Castor fiber) é classificado como Vulnerável (VU) na Lista Vermelha da IUCN. Enfrenta alto risco de ameaça no estado selvagem, com populações em declínio e crescente pressão sobre o habitat.