Canadian beaver vs Circular Ear Shell

Castor canadensis compared with Haliotis cyclobates

Key Differences

• Canadian beaver is Not Evaluated while Circular Ear Shell is Least Concern.

Taxonomic Classification

Rank	Canadian beaver	Circular Ear Shell
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Chordata (脊索動物)	Mollusca (軟体動物)
Class	Mammalia (哺乳類)	Gastropoda (腹足綱)
Order	Rodentia (ネズミ目)	Lepetellida (Lepetellida)
Family	Castoridae (Beavers)	Haliotidae
Genus	Castor (Beavers)	Haliotis
Species	Castor canadensis	Haliotis cyclobates

Evolutionary Relationship

Canadian beaver and Circular Ear Shell share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Circular Ear Shell

LC — Least Concern

Physical Characteristics

Attribute	Canadian beaver	Circular Ear Shell
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	1.0 m	—
Average Weight	25.0 kg	—

Habitat & Geographic Range

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Circular Ear Shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Canadian beaver

北米最大の齧歯類であるカナダビーバーは体重32kgにも達し、カナダ・米国北部の河川、湖沼、湿地に生息する優れた生態系エンジニアです。木を倒して数百メートルに及ぶダムを造ることで池を形成し、数百種の生息環境を提供します。その巣穴や運河は流域全体を変化させます。かつては毛皮のために絶滅寸前まで狩られましたが、個体数は大きく回復しています。

Circular Ear Shell

The Circular Ear Shell (Haliotis cyclobates) is a species in the genus Haliotis. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.