Amami Brown Frog vs Canadian beaver

Rana kobai compared with Castor canadensis

Key Differences

• Amami Brown Frog is Near Threatened while Canadian beaver is Not Evaluated.

Taxonomic Classification

Rank	Amami Brown Frog	Canadian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Anura (Frogs & Toads)	Rodentia (Rodents)
Family	Ranidae	Castoridae (Beavers)
Genus	Rana	Castor (Beavers)
Species	Rana kobai	Castor canadensis

Evolutionary Relationship

Amami Brown Frog and Canadian beaver share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Amami Brown Frog

NT — Near Threatened

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Physical Characteristics

Attribute	Amami Brown Frog	Canadian beaver
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	1.0 m
Average Weight	—	25.0 kg

Habitat & Geographic Range

Amami Brown Frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

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).

Amami Brown Frog

The Amami Brown Frog (Rana kobai) is a species in the genus Rana. It is currently classified as Near Threatened on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

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.