Irrawaddy dolphin vs Lesser Golden-bellied Rice Rat

Orcaella brevirostris compared with Nephelomys nimbosus

Key Differences

• Irrawaddy dolphin is Endangered while Lesser Golden-bellied Rice Rat is Vulnerable.

Taxonomic Classification

Rank	Irrawaddy dolphin	Lesser Golden-bellied Rice Rat
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class same	Mammalia (포유류)	Mammalia (포유류)
Order	Cetacea (Whales & Dolphins)	Rodentia (설치류)
Family	Delphinidae (Oceanic Dolphins)	Cricetidae
Genus	Orcaella	Nephelomys
Species	Orcaella brevirostris	Nephelomys nimbosus

Evolutionary Relationship

Irrawaddy dolphin and Lesser Golden-bellied Rice Rat share a common ancestor at the Class level: Mammalia. (포유류)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Lesser Golden-bellied Rice Rat

VU — Vulnerable

Physical Characteristics

Attribute	Irrawaddy dolphin	Lesser Golden-bellied Rice Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Lesser Golden-bellied Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.