Australian humpback dolphin vs koala

Sousa sahulensis compared with Phascolarctos cinereus

Taxonomic Classification

Rank	Australian humpback dolphin	koala
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Diprotodontia (Marsupials)
Family	Delphinidae (Oceanic Dolphins)	Phascolarctidae (Koalas)
Genus	Sousa	Phascolarctos (Koalas)
Species	Sousa sahulensis	Phascolarctos cinereus

Evolutionary Relationship

Australian humpback dolphin and koala share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Australian humpback dolphin

VU — Vulnerable

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Australian humpback dolphin	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Australian humpback dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Australian humpback dolphin

The Australian humpback dolphin (Sousa sahulensis) is a species in the genus Sousa. It is currently classified as Vulnerable on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.