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 (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Rodentia (อันดับสัตว์ฟันแทะ)	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. (สัตว์เลี้ยงลูกด้วยน้ำนม)

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

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.