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 (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class same	Mammalia (स्तनधारी)	Mammalia (स्तनधारी)
Order	Rodentia (कृंतक)	Carnivora (मांसाहारी गण)
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. (स्तनधारी)

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

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.