Canadian beaver vs Hammond's Oryzomys

Castor canadensis compared with Mindomys hammondi

Key Differences

• Canadian beaver is Not Evaluated while Hammond's Oryzomys is Endangered.

Taxonomic Classification

Rank	Canadian beaver	Hammond's Oryzomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Rodentia (Rodents)	Rodentia (Rodents)
Family	Castoridae (Beavers)	Cricetidae
Genus	Castor (Beavers)	Mindomys
Species	Castor canadensis	Mindomys hammondi

Evolutionary Relationship

Canadian beaver and Hammond's Oryzomys share a common ancestor at the Order level: Rodentia. (Rodents)

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Hammond's Oryzomys

EN — Endangered

Physical Characteristics

Attribute	Canadian beaver	Hammond's Oryzomys
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).

Hammond's Oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.