Polar bear vs tiger quoll

Ursus maritimus compared with Dasyurus maculatus

Key Differences

• Polar bear is Vulnerable while tiger quoll is Near Threatened.

Taxonomic Classification

Rank	Polar bear	tiger quoll
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Carnivora (ネコ目)	Dasyuromorphia (フクロネコ目)
Family	Ursidae (Bears)	Dasyuridae
Genus	Ursus (Bears)	Dasyurus
Species	Ursus maritimus	Dasyurus maculatus

Evolutionary Relationship

Polar bear and tiger quoll share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

tiger quoll

NT — Near Threatened

Physical Characteristics

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

Habitat & Geographic Range

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.

tiger quoll

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。