Japanese Weasel vs Lesser Noctule

Mustela itatsi compared with Nyctalus leisleri

Key Differences

• Japanese Weasel is Near Threatened while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Japanese Weasel	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Carnivora (Carnivorans)	Chiroptera (Bats)
Family	Mustelidae (Weasels & Otters)	Vespertilionidae
Genus	Mustela	Nyctalus
Species	Mustela itatsi	Nyctalus leisleri

Evolutionary Relationship

Japanese Weasel and Lesser Noctule share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Japanese Weasel

NT — Near Threatened

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Japanese Weasel	Lesser Noctule
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.

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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