Fat Sand Rat vs Napo Spiny-rat

Psammomys obesus compared with Proechimys quadruplicatus

Taxonomic Classification

Rank	Fat Sand Rat	Napo Spiny-rat
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order same	Rodentia (ネズミ目)	Rodentia (ネズミ目)
Family	Muridae (Mice & Rats)	Echimyidae
Genus	Psammomys	Proechimys
Species	Psammomys obesus	Proechimys quadruplicatus

Evolutionary Relationship

Fat Sand Rat and Napo Spiny-rat share a common ancestor at the Order level: Rodentia. (ネズミ目)

Conservation Status

Fat Sand Rat

LC — Least Concern

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Fat Sand Rat	Napo Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fat Sand Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.