Japanese Weasel vs Mountain Plume

Mustela itatsi compared with Stenoptilia islandicus

Key Differences

• Japanese Weasel is Near Threatened while Mountain Plume is Vulnerable.

Taxonomic Classification

Rank	Japanese Weasel	Mountain Plume
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Carnivora (Carnivorans)	Lepidoptera (Butterflies & Moths)
Family	Mustelidae (Weasels & Otters)	Pterophoridae
Genus	Mustela	Stenoptilia
Species	Mustela itatsi	Stenoptilia islandicus

Evolutionary Relationship

Japanese Weasel and Mountain Plume share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Japanese Weasel

NT — Near Threatened

Mountain Plume

VU — Vulnerable

Physical Characteristics

Attribute	Japanese Weasel	Mountain Plume
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.

Mountain Plume

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Finland, Iceland, Norway, Russia, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.