イヌワシ vs Polar bear

Aquila chrysaetos compared with Ursus maritimus

Key Differences

  • イヌワシ is Near Threatened while Polar bear is Vulnerable.
  • Polar bear is 90.0x heavier than イヌワシ.
  • イヌワシ lives longer (30 years vs 25 years).

Taxonomic Classification

Rank イヌワシ Polar bear
Kingdom same Animalia (動物) Animalia (動物)
Phylum same Chordata (脊索動物) Chordata (脊索動物)
Class Aves (鳥類) Mammalia (哺乳類)
Order Accipitriformes (タカ目) Carnivora (ネコ目)
Family Accipitridae (Hawks & Eagles) Ursidae (Bears)
Genus Aquila (True Eagles) Ursus (Bears)
Species Aquila chrysaetos Ursus maritimus

Evolutionary Relationship

イヌワシ and Polar bear share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

イヌワシ

NT — Near Threatened

Population: ~300.0K

Trend: Stable →

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute イヌワシ Polar bear
Diet Carnivore Carnivore
Average Lifespan 30 years 25 years
Average Length 85 cm 2.4 m
Average Weight 5.0 kg 450.0 kg

Habitat & Geographic Range

イヌワシ

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and North America (United States). 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.

イヌワシ

世界で最も強力で広く分布する猛禽類の一つであるイヌワシは、翼開長が2.2mに達し、北半球全域の山岳地帯に生息する。卓越した空中ハンターで、滑空飛行と時速200km以上の急降下を利用してウサギ、ノウサギ、ジリス、時には子鹿やキツネを捕食する。多くの文化において数千年にわたる鷹狩り伝統の中心的存在であった。

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。

Shared Countries

Both species can be found in 1 countries:

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