Japanese Weasel vs Long-tailed Weasel

Mustela itatsi compared with Mustela frenata

Key Differences

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

Taxonomic Classification

Rank	Japanese 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 itatsi	Mustela frenata

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Long-tailed Weasel

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Long-tailed Weasel
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.

Long-tailed Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, United States, and Venezuela.