Chinese Brake vs Polar bear

Pteris vittata compared with Ursus maritimus

Key Differences

Chinese Brake is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Chinese Brake	Polar bear
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Tracheophyta	Chordata (脊索動物)
Class	Polypodiopsida (ウラボシ綱)	Mammalia (哺乳類)
Order	Polypodiales (ウラボシ目)	Carnivora (ネコ目)
Family	Pteridaceae	Ursidae (Bears)
Genus	Pteris	Ursus (Bears)
Species	Pteris vittata	Ursus maritimus

Conservation Status

Chinese Brake

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Chinese Brake

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Range

Widely distributed across Africa (Seychelles), Asia (Georgia, Singapore, Taiwan), Europe (7 countries), North America (Cuba, United States), Oceania and the Pacific (Micronesia, Palau, Tonga), and South America (Brazil, Colombia, Suriname).

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.

Chinese Brake

The Chinese Brake (Pteris vittata) is a species in the genus Pteris. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

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。