Delfín de Commerson vs Large Short-tailed Rat

Cephalorhynchus commersonii compared with Brachyuromys ramirohitra

Taxonomic Classification

Rank	Delfín de Commerson	Large Short-tailed Rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Cetacea (Whales & Dolphins)	Rodentia (Rodents)
Family	Delphinidae (Oceanic Dolphins)	Nesomyidae
Genus	Cephalorhynchus	Brachyuromys
Species	Cephalorhynchus commersonii	Brachyuromys ramirohitra

Evolutionary Relationship

Delfín de Commerson and Large Short-tailed Rat share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

Delfín de Commerson

LC — Least Concern

Large Short-tailed Rat

LC — Least Concern

Physical Characteristics

Attribute	Delfín de Commerson	Large Short-tailed Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Delfín de Commerson

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Large Short-tailed Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Delfín de Commerson

<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.