Blacktail spurdog vs Napo Spiny-rat

Squalus melanurus compared with Proechimys quadruplicatus

Key Differences

• Blacktail spurdog is Data Deficient while Napo Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Blacktail spurdog	Napo Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Rodentia (Rodents)
Family	Squalidae	Echimyidae
Genus	Squalus	Proechimys
Species	Squalus melanurus	Proechimys quadruplicatus

Evolutionary Relationship

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

Conservation Status

Blacktail spurdog

DD — Data Deficient

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Blacktail spurdog	Napo Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Blacktail spurdog

The Blacktail spurdog (Squalus melanurus) is a species in the genus Squalus. It is currently classified as Data Deficient on the IUCN Red List.