Napo Spiny-rat vs Smith's Thorius

Proechimys quadruplicatus compared with Thorius smithi

Key Differences

• Napo Spiny-rat is Least Concern while Smith's Thorius is Critically Endangered.

Taxonomic Classification

Rank	Napo Spiny-rat	Smith's Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Rodentia (Rodents)	Caudata (Caudata)
Family	Echimyidae	Plethodontidae
Genus	Proechimys	Thorius
Species	Proechimys quadruplicatus	Thorius smithi

Evolutionary Relationship

Napo Spiny-rat and Smith's Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Napo Spiny-rat

LC — Least Concern

Smith's Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Napo Spiny-rat	Smith's Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Smith's Thorius

Habitat

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

Range

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