Dusky arion vs koala

Arion subfuscus compared with Phascolarctos cinereus

Key Differences

• Dusky arion is Data Deficient while koala is Vulnerable.

Taxonomic Classification

Rank	Dusky arion	koala
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Gastropoda (腹足綱)	Mammalia (哺乳類)
Order	Stylommatophora (Stylommatophora)	Diprotodontia (カンガルー目)
Family	Arionidae	Phascolarctidae (Koalas)
Genus	Arion	Phascolarctos (Koalas)
Species	Arion subfuscus	Phascolarctos cinereus

Evolutionary Relationship

Dusky arion and koala share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Dusky arion

DD — Data Deficient

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Dusky arion	koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Dusky arion

Habitat

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

Range

Found across Europe (5 countries) and North America (United States).

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.

koala

オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。