Bornean orangutan vs koala

Pongo pygmaeus compared with Phascolarctos cinereus

Key Differences

Bornean orangutan is Critically Endangered while koala is Vulnerable.
Bornean orangutan is omnivore while koala is herbivore.
Bornean orangutan is 7.5x heavier than koala.
Bornean orangutan lives longer (35 years vs 15 years).

Taxonomic Classification

Rank	Bornean orangutan	koala
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	Primates (サル目)	Diprotodontia (カンガルー目)
Family	Hominidae (Great Apes)	Phascolarctidae (Koalas)
Genus	Pongo (Orangutans)	Phascolarctos (Koalas)
Species	Pongo pygmaeus	Phascolarctos cinereus

Evolutionary Relationship

Bornean orangutan and koala share a common ancestor at the Class level: Mammalia. (哺乳類)

表示 Class: Mammalia

Conservation Status

Bornean orangutan

CR — Critically Endangered

Population: ~104.7K

Trend: Decreasing ↓

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Bornean orangutan	koala
Diet	Omnivore	Herbivore
Average Lifespan	35 years	15 years
Average Length	1.4 m	75 cm
Average Weight	75.0 kg	10.0 kg

Habitat & Geographic Range

Bornean orangutan

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Indonesia and Malaysia. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.

Bornean orangutan

世界最大の樹上性哺乳類であるボルネオオランウータン（Pongo pygmaeus）は最大90kgの体重でボルネオ島の熱帯雨林の林冠で生涯のほとんどを過ごします。単独生活をする半遊牧的な動物で、木に夜間の睡眠巣を作り、果実、葉、無脊椎動物を採食します。パーム油拡大による森林伐採と密猟により、過去60年で個体数が50%以上減少した深刻な絶滅危惧（CR）種です。

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。