Irrawaddy dolphin vs Zeledon’s Mouse Opossum

Orcaella brevirostris compared with Marmosa zeledoni

Key Differences

• Irrawaddy dolphin is Endangered while Zeledon’s Mouse Opossum is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Zeledon’s Mouse Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Didelphimorphia (Didelphimorphia)
Family	Delphinidae (Oceanic Dolphins)	Didelphidae
Genus	Orcaella	Marmosa
Species	Orcaella brevirostris	Marmosa zeledoni

Evolutionary Relationship

Irrawaddy dolphin and Zeledon’s Mouse Opossum share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Zeledon’s Mouse Opossum

LC — Least Concern

Physical Characteristics

Attribute	Irrawaddy dolphin	Zeledon’s Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Zeledon’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.