least weasel vs Polar bear

Mustela nivalis compared with Ursus maritimus

Key Differences

• least weasel is Near Threatened while Polar bear is Vulnerable.

Taxonomic Classification

Rank	least weasel	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order same	Carnivora (carnívoros)	Carnivora (carnívoros)
Family	Mustelidae (Weasels & Otters)	Ursidae (Bears)
Genus	Mustela	Ursus (Bears)
Species	Mustela nivalis	Ursus maritimus

Evolutionary Relationship

least weasel and Polar bear share a common ancestor at the Order level: Carnivora. (carnívoros)

Conservation Status

least weasel

NT — Near Threatened

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	least weasel	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

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.

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

least weasel

A Doninha-comum (Mustela nivalis) está classificada como Quase Ameaçada (NT) na Lista Vermelha da IUCN. Está próxima de se qualificar como ameaçada, com populações que podem tornar-se vulneráveis sem ação de conservação.

Polar bear

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway