Japanese Weasel vs Stoat, Ermine

Mustela itatsi compared with Mustela erminea

Key Differences

• Japanese Weasel is Near Threatened while Stoat, Ermine is Vulnerable.

Taxonomic Classification

Rank	Japanese Weasel	Stoat, Ermine
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order same	Carnivora (ネコ目)	Carnivora (ネコ目)
Family same	Mustelidae (Weasels & Otters)	Mustelidae (Weasels & Otters)
Genus same	Mustela	Mustela
Species	Mustela itatsi	Mustela erminea

Evolutionary Relationship

Japanese Weasel and Stoat, Ermine share a common ancestor at the Genus level: Mustela.

Conservation Status

Japanese Weasel

NT — Near Threatened

Stoat, Ermine

VU — Vulnerable

Physical Characteristics

Attribute	Japanese Weasel	Stoat, Ermine
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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.

Stoat, Ermine

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Australasia and Indomalayan and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Indonesia), Europe (6 countries), North America (United States), and Oceania and the Pacific (New Zealand). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Stoat, Ermine

オコジョ(Mustela erminea)はIUCNレッドリストで危急(VU)に分類されています。野生での絶滅リスクが高く、個体数は減少し、生息地への圧力が増しています。