Long-tailed Weasel vs Polar bear

Mustela frenata compared with Ursus maritimus

Key Differences

Long-tailed Weasel is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Long-tailed Weasel	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Carnivora (Carnivorans)	Carnivora (Carnivorans)
Family	Mustelidae (Weasels & Otters)	Ursidae (Bears)
Genus	Mustela	Ursus (Bears)
Species	Mustela frenata	Ursus maritimus

Evolutionary Relationship

Long-tailed Weasel and Polar bear share a common ancestor at the Order level: Carnivora. (Carnivorans)

View Order: Carnivora

Conservation Status

Long-tailed Weasel

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Long-tailed Weasel	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Long-tailed Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, United States, and Venezuela.

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.

Long-tailed Weasel

No description available.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.