brown bear vs Buckelwal

Ursus arctos compared with Megaptera novaeangliae

Key Differences

brown bear is Extinct while Buckelwal is Vulnerable.
brown bear is omnivore while Buckelwal is carnivore.
Buckelwal is 100.0x heavier than brown bear.
Buckelwal lives longer (50 years vs 25 years).

Taxonomic Classification

Rank	brown bear	Buckelwal
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)	Cetacea (Whales & Dolphins)
Family	Ursidae (Bears)	Balaenopteridae (Rorquals)
Genus	Ursus (Bears)	Megaptera (Humpback Whales)
Species	Ursus arctos	Megaptera novaeangliae

Evolutionary Relationship

brown bear and Buckelwal share a common ancestor at the Class level: Mammalia. (哺乳類)

表示 Class: Mammalia

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	brown bear	Buckelwal
Diet	Omnivore	Carnivore
Average Lifespan	25 years	50 years
Average Length	2.0 m	15.0 m
Average Weight	300.0 kg	30.0 t

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

Buckelwal

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

brown bear

世界で最も広く分布するクマ科の種であるヒグマ（Ursus arctos）は、北アメリカとヨーロッパからロシアを経て日本まで、森林、ツンドラ、高山草原を占有します。成体はアラスカの沿岸個体群では最大700kgまで体重が増えることがあります。果物、根、魚、腐肉を食べる雑食動物で、ヒグマは景観全体に栄養素を分配するキーストーン種です。ほとんどの個体群は安定していますが、一部の亜種は脅威にさらされています。

Buckelwal

大型クジラの中で最も曲芸的なクジラのひとつであるザトウクジラは、繁殖期にオスが歌う複雑で神秘的な歌で知られており、数時間にわたって続き時間をかけて変化していきます。体長16m、体重30トンに達し、哺乳類の中で最長の回遊を行います。全海洋に分布し、協調的なバブルネット採餌でオキアミや小魚を捕食します。歴史的な捕鯨後の個体数はおおむね回復しています。