Broadbacked stingaree vs Canadian beaver

Urolophus expansus compared with Castor canadensis

Key Differences

• Broadbacked stingaree is Least Concern while Canadian beaver is Not Evaluated.

Taxonomic Classification

Rank	Broadbacked stingaree	Canadian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Urolophidae	Castoridae (Beavers)
Genus	Urolophus	Castor (Beavers)
Species	Urolophus expansus	Castor canadensis

Evolutionary Relationship

Broadbacked stingaree and Canadian beaver share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Broadbacked stingaree

LC — Least Concern

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Physical Characteristics

Attribute	Broadbacked stingaree	Canadian beaver
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	1.0 m
Average Weight	—	25.0 kg

Habitat & Geographic Range

Broadbacked stingaree

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).

Broadbacked stingaree

The Broadbacked stingaree (Urolophus expansus) is a species in the genus Urolophus. It is currently classified as Least Concern on the IUCN Red List.

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.