Irrawaddy dolphin vs Ruff

Orcaella brevirostris compared with Calidris pugnax

Key Differences

• Irrawaddy dolphin is Endangered while Ruff is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Ruff
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Charadriiformes (Charadriiformes)
Family	Delphinidae (Oceanic Dolphins)	Scolopacidae
Genus	Orcaella	Calidris
Species	Orcaella brevirostris	Calidris pugnax

Evolutionary Relationship

Irrawaddy dolphin and Ruff share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Irrawaddy dolphin	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela).

Ruff

Ruff (Calidris pugnax) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.