American Dog Tick vs Polar bear

Dermacentor variabilis compared with Ursus maritimus

Key Differences

American Dog Tick is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	American Dog Tick	Polar bear
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Arthropoda (節足動物)	Chordata (脊索動物)
Class	Arachnida (クモガタ類)	Mammalia (哺乳類)
Order	Ixodida (マダニ)	Carnivora (ネコ目)
Family	Ixodidae	Ursidae (Bears)
Genus	Dermacentor	Ursus (Bears)
Species	Dermacentor variabilis	Ursus maritimus

Evolutionary Relationship

American Dog Tick and Polar bear share a common ancestor at the Kingdom level: Animalia. (動物)

表示 Kingdom: Animalia

Conservation Status

American Dog Tick

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	American Dog Tick	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

American Dog Tick

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Denmark, Norway, Sweden, and United States.

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.

American Dog Tick

The American Dog Tick (Dermacentor variabilis) is a species in the genus Dermacentor. Typically found in terrestrial habitats from forests to deserts.

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。