Atlantic Smooth Dogfish vs Black-shouldered Opossum

Mustelus canis compared with Caluromysiops irrupta

Key Differences

• Atlantic Smooth Dogfish is Near Threatened while Black-shouldered Opossum is Least Concern.

Taxonomic Classification

Rank	Atlantic Smooth Dogfish	Black-shouldered Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Carcharhiniformes (Ground Sharks)	Didelphimorphia (Didelphimorphia)
Family	Triakidae	Didelphidae
Genus	Mustelus	Caluromysiops
Species	Mustelus canis	Caluromysiops irrupta

Evolutionary Relationship

Atlantic Smooth Dogfish and Black-shouldered Opossum share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Atlantic Smooth Dogfish

NT — Near Threatened

Black-shouldered Opossum

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Smooth Dogfish	Black-shouldered Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Smooth Dogfish

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Found in Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Black-shouldered Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Atlantic Smooth Dogfish

The Atlantic Smooth Dogfish (Mustelus canis) is a species in the genus Mustelus. It is currently classified as Near Threatened on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Black-shouldered Opossum

The Black-shouldered Opossum (Caluromysiops irrupta) is a species in the genus Caluromysiops. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.