koala vs yellow-necked mouse, yellow-necked field mouse

Phascolarctos cinereus compared with Apodemus flavicollis

Key Differences

• koala is Vulnerable while yellow-necked mouse, yellow-necked field mouse is Near Threatened.

Taxonomic Classification

Rank	koala	yellow-necked mouse, yellow-necked field mouse
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Mammalia (哺乳類)	Mammalia (哺乳類)
Order	Diprotodontia (カンガルー目)	Rodentia (ネズミ目)
Family	Phascolarctidae (Koalas)	Muridae (Mice & Rats)
Genus	Phascolarctos (Koalas)	Apodemus
Species	Phascolarctos cinereus	Apodemus flavicollis

Evolutionary Relationship

koala and yellow-necked mouse, yellow-necked field mouse share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

yellow-necked mouse, yellow-necked field mouse

NT — Near Threatened

Physical Characteristics

Attribute	koala	yellow-necked mouse, yellow-necked field mouse
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.

yellow-necked mouse, yellow-necked field mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Russia, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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。