Blackthorn Dotty vs Canadian beaver

Polystigma rubrum compared with Castor canadensis

Key Differences

Blackthorn Dotty is Least Concern while Canadian beaver is Not Evaluated.

Taxonomic Classification

Rank	Blackthorn Dotty	Canadian beaver
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Sordariomycetes (Sordariomycetes)	Mammalia (Mammals)
Order	Phyllachorales (Phyllachorales)	Rodentia (Rodents)
Family	Phyllachoraceae	Castoridae (Beavers)
Genus	Polystigma	Castor (Beavers)
Species	Polystigma rubrum	Castor canadensis

Conservation Status

Blackthorn Dotty

LC — Least Concern

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Blackthorn Dotty

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

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).

Blackthorn Dotty

The Blackthorn Dotty (Polystigma rubrum) is a species in the genus Polystigma. It is currently classified as Least Concern on the IUCN Red List. Distributed across Denmark, Norway, and Sweden.

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.