Gray smooth hound vs Polynesian rat

Mustelus californicus compared with Rattus exulans

Taxonomic Classification

Rank	Gray smooth hound	Polynesian rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Carcharhiniformes (Ground Sharks)	Rodentia (Rodents)
Family	Triakidae	Muridae (Mice & Rats)
Genus	Mustelus	Rattus
Species	Mustelus californicus	Rattus exulans

Evolutionary Relationship

Gray smooth hound and Polynesian rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gray smooth hound

LC — Least Concern

Polynesian rat

LC — Least Concern

Physical Characteristics

Attribute	Gray smooth hound	Polynesian rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray smooth hound

Habitat

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

Polynesian rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (6 countries), Europe (United Kingdom), North America (United States), Oceania and the Pacific (11 countries), and South America (Chile).