Canadian beaver vs Harmless Serotine

Castor canadensis compared with Eptesicus innoxius

Key Differences

• Canadian beaver is Not Evaluated while Harmless Serotine is Near Threatened.

Taxonomic Classification

Rank	Canadian beaver	Harmless Serotine
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Rodentia (Bộ Gặm nhấm)	Chiroptera (bộ Dơi)
Family	Castoridae (Beavers)	Vespertilionidae
Genus	Castor (Beavers)	Eptesicus
Species	Castor canadensis	Eptesicus innoxius

Evolutionary Relationship

Canadian beaver and Harmless Serotine share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Harmless Serotine

NT — Near Threatened

Physical Characteristics

Attribute	Canadian beaver	Harmless Serotine
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).

Harmless Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.