Northern, Pribilof, or Alaska fur seal vs Olive-gray Thomasomys

Callorhinus ursinus compared with Thomasomys cinereus

Key Differences

• Northern, Pribilof, or Alaska fur seal is Vulnerable while Olive-gray Thomasomys is Least Concern.

Taxonomic Classification

Rank	Northern, Pribilof, or Alaska fur seal	Olive-gray Thomasomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Carnivora (Carnivorans)	Rodentia (Rodents)
Family	Otariidae	Cricetidae
Genus	Callorhinus	Thomasomys
Species	Callorhinus ursinus	Thomasomys cinereus

Evolutionary Relationship

Northern, Pribilof, or Alaska fur seal and Olive-gray Thomasomys share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Northern, Pribilof, or Alaska fur seal

VU — Vulnerable

Olive-gray Thomasomys

LC — Least Concern

Physical Characteristics

Attribute	Northern, Pribilof, or Alaska fur seal	Olive-gray Thomasomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Northern, Pribilof, or Alaska fur seal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Russia and Ukraine. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.