Polar bear vs Veiled Chameleon

Ursus maritimus compared with Chamaeleo calyptratus

Key Differences

Polar bear is Vulnerable while Veiled Chameleon is Least Concern.
Polar bear is carnivore while Veiled Chameleon is omnivore.
Polar bear is 2250.0x heavier than Veiled Chameleon.
Polar bear lives longer (25 years vs 5 years).

Taxonomic Classification

Rank	Polar bear	Veiled Chameleon
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Reptilia (爬虫類)
Order	Carnivora (ネコ目)	Squamata (有鱗目)
Family	Ursidae (Bears)	Chamaeleonidae (Chameleons)
Genus	Ursus (Bears)	Chamaeleo (Chameleons)
Species	Ursus maritimus	Chamaeleo calyptratus

Evolutionary Relationship

Polar bear and Veiled Chameleon share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Veiled Chameleon

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Polar bear	Veiled Chameleon
Diet	Carnivore	Omnivore
Average Lifespan	25 years	5 years
Average Length	2.4 m	50 cm
Average Weight	450.0 kg	200 g

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.

Veiled Chameleon

Habitat

Typically found in a wide range of habitat types.

Range

Distributed across Saudi Arabia and Yemen.

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。