Haviside s Dolphin vs Polynesian rat

Cephalorhynchus heavisidii compared with Rattus exulans

Key Differences

• Haviside s Dolphin is Near Threatened while Polynesian rat is Least Concern.

Taxonomic Classification

Rank	Haviside s Dolphin	Polynesian rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Rodentia (Rodents)
Family	Delphinidae (Oceanic Dolphins)	Muridae (Mice & Rats)
Genus	Cephalorhynchus	Rattus
Species	Cephalorhynchus heavisidii	Rattus exulans

Evolutionary Relationship

Haviside s Dolphin and Polynesian rat share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Haviside s Dolphin

NT — Near Threatened

Polynesian rat

LC — Least Concern

Physical Characteristics

Attribute	Haviside s Dolphin	Polynesian rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Haviside s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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).