Canadian beaver vs Narrow-ridged Finless Porpoise

Castor canadensis compared with Neophocaena asiaeorientalis

Key Differences

Canadian beaver is Not Evaluated while Narrow-ridged Finless Porpoise is Endangered.

Taxonomic Classification

Rank	Canadian beaver	Narrow-ridged Finless Porpoise
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Rodentia (ネズミ目)	Cetacea (Whales & Dolphins)
Family	Castoridae (Beavers)	Phocoenidae
Genus	Castor (Beavers)	Neophocaena
Species	Castor canadensis	Neophocaena asiaeorientalis

Evolutionary Relationship

Canadian beaver and Narrow-ridged Finless Porpoise share a common ancestor at the Class level: Mammalia. (哺乳類)

表示 Class: Mammalia

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Narrow-ridged Finless Porpoise

EN — Endangered

Physical Characteristics

Attribute	Canadian beaver	Narrow-ridged Finless Porpoise
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).

Narrow-ridged Finless Porpoise

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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。