Japanese Weasel vs Small Crest

Mustela itatsi compared with Anarsia spartiella

Key Differences

• Japanese Weasel is Near Threatened while Small Crest is Endangered.

Taxonomic Classification

Rank	Japanese Weasel	Small Crest
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)	Gelechiidae
Genus	Mustela	Anarsia
Species	Mustela itatsi	Anarsia spartiella

Evolutionary Relationship

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

Conservation Status

Japanese Weasel

NT — Near Threatened

Small Crest

EN — Endangered

Physical Characteristics

Attribute	Japanese Weasel	Small Crest
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.

Small Crest

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.