Irrawaddy dolphin vs Nile Crocodile

Orcaella brevirostris compared with Crocodylus niloticus

Key Differences

• Irrawaddy dolphin is Endangered while Nile Crocodile is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Nile Crocodile
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Reptilia (Reptiles)
Order	Cetacea (Whales & Dolphins)	Crocodylia (Crocodilians)
Family	Delphinidae (Oceanic Dolphins)	Crocodylidae (Crocodiles)
Genus	Orcaella	Crocodylus (True Crocodiles)
Species	Orcaella brevirostris	Crocodylus niloticus

Evolutionary Relationship

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

Conservation Status

Irrawaddy dolphin

EN — Endangered

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Irrawaddy dolphin	Nile Crocodile
Diet	—	Carnivore
Average Lifespan	—	70 years
Average Length	—	5.0 m
Average Weight	—	750.0 kg

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Egypt, Kenya, Madagascar, South Africa, and Tanzania.

Nile Crocodile

The Nile crocodile is one of the largest reptiles in the world and is found throughout sub-Saharan Africa.