Napo Spiny-rat vs roker

Proechimys quadruplicatus compared with Raja clavata

Key Differences

• Napo Spiny-rat is Least Concern while roker is Near Threatened.

Taxonomic Classification

Rank	Napo Spiny-rat	roker
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Echimyidae	Rajidae
Genus	Proechimys	Raja
Species	Proechimys quadruplicatus	Raja clavata

Evolutionary Relationship

Napo Spiny-rat and roker share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Napo Spiny-rat

LC — Least Concern

roker

NT — Near Threatened

Physical Characteristics

Attribute	Napo Spiny-rat	roker
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.

roker

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.