least weasel vs Long-tailed Weasel

Mustela nivalis compared with Mustela frenata

Key Differences

• least weasel is Near Threatened while Long-tailed Weasel is Least Concern.

Taxonomic Classification

Rank	least weasel	Long-tailed Weasel
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 nivalis	Mustela frenata

Evolutionary Relationship

least weasel and Long-tailed Weasel share a common ancestor at the Genus level: Mustela.

Conservation Status

least weasel

NT — Near Threatened

Long-tailed Weasel

LC — Least Concern

Physical Characteristics

Attribute	least weasel	Long-tailed Weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

least weasel

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 4 distinct biome types spanning the Australasia and Oceanian and Palearctic realms.

Range

Widely distributed across Africa (Sao Tome and Principe), Asia (Cyprus), Europe (11 countries), and Oceania and the Pacific (New Zealand). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Long-tailed Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, United States, and Venezuela.

least weasel

コイタチ（Mustela nivalis）はIUCNレッドリストで準絶滅危惧（NT）に分類されています。絶滅危惧の基準に近接しており、保護対策なしには脆弱な状態になる可能性があります。