koala vs Water Rock-bristle

Phascolarctos cinereus compared with Seligeria carniolica

Key Differences

koala is Vulnerable while Water Rock-bristle is Critically Endangered.

Taxonomic Classification

Rank	koala	Water Rock-bristle
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Bryophyta
Class	Mammalia (哺乳類)	Bryopsida (マゴケ綱)
Order	Diprotodontia (カンガルー目)	Grimmiales (ギボウシゴケ目)
Family	Phascolarctidae (Koalas)	Seligeriaceae
Genus	Phascolarctos (Koalas)	Seligeria
Species	Phascolarctos cinereus	Seligeria carniolica

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Water Rock-bristle

CR — Critically Endangered

Physical Characteristics

Attribute	koala	Water Rock-bristle
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.

Water Rock-bristle

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden. Currently classified as Critically Endangered 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。