Japanese Weasel vs Marsh Dwarf

Mustela itatsi compared with Elachista alpinella

Key Differences

• Japanese Weasel is Near Threatened while Marsh Dwarf is Least Concern.

Taxonomic Classification

Rank	Japanese Weasel	Marsh Dwarf
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)	Elachistidae
Genus	Mustela	Elachista
Species	Mustela itatsi	Elachista alpinella

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Marsh Dwarf

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Marsh Dwarf
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.

Marsh Dwarf

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.