Amazon River Dolphin vs koala

Inia geoffrensis compared with Phascolarctos cinereus

Key Differences

• Amazon River Dolphin is Data Deficient while koala is Vulnerable.

Taxonomic Classification

Rank	Amazon River Dolphin	koala
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum same	Chordata (حبليات)	Chordata (حبليات)
Class same	Mammalia (ثدييات)	Mammalia (ثدييات)
Order	Cetacea (Whales & Dolphins)	Diprotodontia (ثنائيات الأسنان الأمامية)
Family	Iniidae	Phascolarctidae (Koalas)
Genus	Inia	Phascolarctos (Koalas)
Species	Inia geoffrensis	Phascolarctos cinereus

Evolutionary Relationship

Amazon River Dolphin and koala share a common ancestor at the Class level: Mammalia. (ثدييات)

Conservation Status

Amazon River Dolphin

DD — Data Deficient

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Amazon River Dolphin	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Amazon River Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

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.

Amazon River Dolphin

The Amazon River Dolphin (Inia geoffrensis) is a species in the genus Inia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. 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.