koala vs robust shell

Phascolarctos cinereus compared with Littoraria undulata

Key Differences

• koala is Vulnerable while robust shell is Least Concern.

Taxonomic Classification

Rank	koala	robust shell
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Mollusca (มอลลัสกา)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Gastropoda (ชั้นแกสโทรโพดา)
Order	Diprotodontia (Marsupials)	Littorinimorpha (Littorinimorpha)
Family	Phascolarctidae (Koalas)	Littorinidae
Genus	Phascolarctos (Koalas)	Littoraria
Species	Phascolarctos cinereus	Littoraria undulata

Evolutionary Relationship

koala and robust shell share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

robust shell

LC — Least Concern

Physical Characteristics

Attribute	koala	robust shell
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

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.

robust shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found in Taiwan.

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.