Polar bear vs 丹頂鶴

Ursus maritimus compared with Grus japonensis

Key Differences

• Polar bear is carnivore while 丹頂鶴 is omnivore.
• Polar bear is 45.0x heavier than 丹頂鶴.
• 丹頂鶴 lives longer (40 years vs 25 years).

Taxonomic Classification

Rank	Polar bear	丹頂鶴
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Carnivora (食肉目)	Gruiformes (鹤形目)
Family	Ursidae (Bears)	Gruidae
Genus	Ursus (Bears)	Grus
Species	Ursus maritimus	Grus japonensis

Evolutionary Relationship

Polar bear and 丹頂鶴 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

丹頂鶴

VU — Vulnerable

Population: ~2.8K

Trend: Stable →

Physical Characteristics

Attribute	Polar bear	丹頂鶴
Diet	Carnivore	Omnivore
Average Lifespan	25 years	40 years
Average Length	2.4 m	1.5 m
Average Weight	450.0 kg	10.0 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.

丹頂鶴

Habitat

Typically found in a wide range of habitat types.

Range

Found across Asia (Taiwan) and Europe (5 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。

丹頂鶴

丹顶鹤（Grus japonensis）是世界上最稀有的鹤之一，体高1.5米，在东亚文化中被视为长寿、忠贞和吉祥的象征。栖息于俄罗斯、中国、朝鲜半岛和日本的湿地与沼泽，表演包括同步跳跃、鞠躬和鸣叫的精致优雅求偶舞蹈。野生种群估计仅约2,750只，面临濒危，受到湿地排水和栖息地丧失的威胁。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway