Irrawaddy dolphin vs Mute Swan

Orcaella brevirostris compared with Cygnus olor

Key Differences

Irrawaddy dolphin is Endangered while Mute Swan is Near Threatened.

Taxonomic Classification

Rank	Irrawaddy dolphin	Mute Swan
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Anseriformes (Anseriformes)
Family	Delphinidae (Oceanic Dolphins)	Anatidae
Genus	Orcaella	Cygnus
Species	Orcaella brevirostris	Cygnus olor

Evolutionary Relationship

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

View Phylum: Chordata

Conservation Status

Irrawaddy dolphin

EN — Endangered

Mute Swan

NT — Near Threatened

Population: ~600.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Irrawaddy dolphin	Mute Swan
Diet	—	Herbivore
Average Lifespan	—	20 years
Average Length	—	1.5 m
Average Weight	—	12.0 kg

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Mute Swan

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 8 distinct biome types.

Range

Widely distributed across Africa (South Africa), Asia (4 countries), Europe (24 countries), North America (Canada, Dominican Republic, United States), Oceania and the Pacific (New Zealand), and South America (Colombia, Peru). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Irrawaddy dolphin

No description available.

Mute Swan

The most commonly encountered swan globally and one of the largest flying birds, mute swans weigh up to 15 kg and inhabit lakes, rivers, and coastal bays across Europe and Asia, with widespread introduced populations in North America and Australia. Despite their name, mute swans produce a range of hissing, grunting, and wing-whistling sounds. Males aggressively defend territories and are capable of injuring humans and drowning dogs with powerful wing strikes.