Blacktail spurdog vs Caatinga laucha

Squalus melanurus compared with Calomys expulsus

Key Differences

• Blacktail spurdog is Data Deficient while Caatinga laucha is Least Concern.

Taxonomic Classification

Rank	Blacktail spurdog	Caatinga laucha
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Rodentia (Rodents)
Family	Squalidae	Cricetidae
Genus	Squalus	Calomys
Species	Squalus melanurus	Calomys expulsus

Evolutionary Relationship

Blacktail spurdog and Caatinga laucha share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Blacktail spurdog

DD — Data Deficient

Caatinga laucha

LC — Least Concern

Physical Characteristics

Attribute	Blacktail spurdog	Caatinga laucha
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blacktail spurdog

Caatinga laucha

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Caatinga laucha

The Caatinga laucha (Calomys expulsus) is a species in the genus Calomys. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.