Commerson s Dolphin vs Costa Central Oryzomys

Cephalorhynchus commersonii compared with Nephelomys caracolus

Taxonomic Classification

Rank	Commerson s Dolphin	Costa Central Oryzomys
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Cetacea (Whales & Dolphins)	Rodentia (啮齿目)
Family	Delphinidae (Oceanic Dolphins)	Cricetidae
Genus	Cephalorhynchus	Nephelomys
Species	Cephalorhynchus commersonii	Nephelomys caracolus

Evolutionary Relationship

Commerson s Dolphin and Costa Central Oryzomys share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

Commerson s Dolphin

LC — Least Concern

Costa Central Oryzomys

LC — Least Concern

Physical Characteristics

Attribute	Commerson s Dolphin	Costa Central Oryzomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Commerson s Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Costa Central Oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

Commerson s Dolphin

<em>Cephalorhynchus commersonii</em>, commonly known as Commerson's Dolphin, is a small cetacean in the family Delphinidae. This species is classified as Least Concern on the IUCN Red List and is notable for its striking black-and-white coloration, which makes it one of the most visually distinctive dolphin species. Commerson's Dolphins typically inhabit coastal and nearshore marine environments of the Southern Hemisphere, particularly around the Falkland Islands, the southern tip of South America, and a geographically isolated population near the Kerguelen Islands in the Indian Ocean. These dolphins are highly social animals, often observed in small groups engaging in acrobatic behaviors near the surface. They typically feed on fish, squid, and crustaceans, often hunting cooperatively in shallow waters and kelp beds. Their average lifespan is approximately 18 years, and they are known for their fast, energetic swimming. Commerson's Dolphins are sometimes caught as bycatch in fishing nets, posing a localized conservation concern despite their overall Least Concern status.