Canadian beaver vs

Castor canadensis compared with Micrococcus cohnii

Taxonomic Classification

Rank	Canadian beaver
Kingdom	Animalia (Animals)	Bacteria (Bacteria)
Phylum	Chordata (Chordates)	Actinobacteriota (Actinobacteriota)
Class	Mammalia (Mammals)	Actinomycetia (Actinomycetia)
Order	Rodentia (Rodents)	Actinomycetales (Actinomycetales)
Family	Castoridae (Beavers)	Micrococcaceae
Genus	Castor (Beavers)	Micrococcus
Species	Castor canadensis	Micrococcus cohnii

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

NE — Not Evaluated

Physical Characteristics

Attribute	Canadian beaver
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).

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

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.

Micrococcus cohnii is a Gram-positive coccus in the family Micrococcaceae, found in soil, dust, and on mammalian skin surfaces. It is aerobic and non-motile, forming characteristically yellow-pigmented colonies on culture media. Named in honor of microbiologist Ferdinand Cohn, it represents one of several species within this diverse genus.