Japanese Weasel vs Mountain Ermel

Mustela itatsi compared with Ethmia pyrausta

Key Differences

• Japanese Weasel is Near Threatened while Mountain Ermel is Endangered.

Taxonomic Classification

Rank	Japanese Weasel	Mountain Ermel
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)	Ethmiidae
Genus	Mustela	Ethmia
Species	Mustela itatsi	Ethmia pyrausta

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Mountain Ermel

EN — Endangered

Physical Characteristics

Attribute	Japanese Weasel	Mountain Ermel
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 Ermel

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found in Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.