Polar bear vs

Ursus maritimus compared with Xylaria corniformis

Key Differences

• Polar bear is Vulnerable while is Endangered.

Taxonomic Classification

Rank	Polar bear
Kingdom	Animalia (动物界)	Fungi (真菌界)
Phylum	Chordata (脊索动物门)	Ascomycota (子囊菌门)
Class	Mammalia (哺乳動物)	Sordariomycetes (粪壳菌纲)
Order	Carnivora (食肉目)	Xylariales (炭角菌目)
Family	Ursidae (Bears)	Xylariaceae
Genus	Ursus (Bears)	Xylaria
Species	Ursus maritimus	Xylaria corniformis

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

EN — Endangered

Physical Characteristics

Attribute	Polar bear
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.

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 5 distinct biome types within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Brazil, Norway, Sweden, and United States. Currently classified as Endangered 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。

角状炭角菌（Xylaria corniformis）是在热带和亚热带森林栖息地腐烂木材上产生坚硬角状或鹿角状黑色子座的棒状碳质子囊菌。是为森林生态系统木质纤维素分解做出贡献的腐生木材分解者。被列为濒危（EN），威胁包括热带森林砍伐和老龄林栖息地的丧失。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway