Olive-gray Thomasomys vs Taiwan spurdog

Thomasomys cinereus compared with Squalus formosus

Key Differences

• Olive-gray Thomasomys is Least Concern while Taiwan spurdog is Endangered.

Taxonomic Classification

Rank	Olive-gray Thomasomys	Taiwan spurdog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Squaliformes (Squaliformes)
Family	Cricetidae	Squalidae
Genus	Thomasomys	Squalus
Species	Thomasomys cinereus	Squalus formosus

Evolutionary Relationship

Olive-gray Thomasomys and Taiwan spurdog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Olive-gray Thomasomys

LC — Least Concern

Taiwan spurdog

EN — Endangered

Physical Characteristics

Attribute	Olive-gray Thomasomys	Taiwan spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Taiwan spurdog

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

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