Altai Birch Mouse vs least weasel

Sicista napaea compared with Mustela nivalis

Key Differences

• Altai Birch Mouse is Least Concern while least weasel is Near Threatened.

Taxonomic Classification

Rank	Altai Birch Mouse	least weasel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Carnivora (Carnivorans)
Family	Dipodidae	Mustelidae (Weasels & Otters)
Genus	Sicista	Mustela
Species	Sicista napaea	Mustela nivalis

Evolutionary Relationship

Altai Birch Mouse and least weasel share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Altai Birch Mouse

LC — Least Concern

least weasel

NT — Near Threatened

Physical Characteristics

Attribute	Altai Birch Mouse	least weasel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Altai Birch Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Altai Birch Mouse

The Altai Birch Mouse (Sicista napaea) is a species in the genus Sicista. It is currently classified as Least Concern on the IUCN Red List. 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.