koala vs tree slug

Phascolarctos cinereus compared with Lehmannia marginata

Key Differences

• koala is Vulnerable while tree slug is Least Concern.

Taxonomic Classification

Rank	koala	tree slug
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Diprotodontia (Marsupials)	Stylommatophora (Stylommatophora)
Family	Phascolarctidae (Koalas)	Limacidae
Genus	Phascolarctos (Koalas)	Lehmannia
Species	Phascolarctos cinereus	Lehmannia marginata

Evolutionary Relationship

koala and tree slug share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

tree slug

LC — Least Concern

Physical Characteristics

Attribute	koala	tree slug
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.

tree slug

Habitat

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

Range

Widely distributed across Europe (6 countries), North America (Dominican Republic), and South America (Chile).

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.