least weasel vs Noble Brush-tailed Mouse

Mustela nivalis compared with Calomyscus grandis

Key Differences

• least weasel is Near Threatened while Noble Brush-tailed Mouse is Data Deficient.

Taxonomic Classification

Rank	least weasel	Noble Brush-tailed Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Carnivora (Carnivorans)	Rodentia (Rodents)
Family	Mustelidae (Weasels & Otters)	Calomyscidae
Genus	Mustela	Calomyscus
Species	Mustela nivalis	Calomyscus grandis

Evolutionary Relationship

least weasel and Noble Brush-tailed Mouse share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

least weasel

NT — Near Threatened

Noble Brush-tailed Mouse

DD — Data Deficient

Physical Characteristics

Attribute	least weasel	Noble Brush-tailed Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

least weasel

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 4 distinct biome types spanning the Australasia and Oceanian and Palearctic realms.

Range

Widely distributed across Africa (Sao Tome and Principe), Asia (Cyprus), Europe (11 countries), and Oceania and the Pacific (New Zealand). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Noble Brush-tailed Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

least weasel

least weasel (Mustela nivalis) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.