Bornean orangutan vs Sumatran orangutan

Pongo pygmaeus compared with Pongo abelii

Taxonomic Classification

Rank	Bornean orangutan	Sumatran orangutan
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 same	Primates (サル目)	Primates (サル目)
Family same	Hominidae (Great Apes)	Hominidae (Great Apes)
Genus same	Pongo (Orangutans)	Pongo (Orangutans)
Species	Pongo pygmaeus	Pongo abelii

Evolutionary Relationship

Bornean orangutan and Sumatran orangutan share a common ancestor at the Genus level: Pongo. (Orangutans)

Conservation Status

Bornean orangutan

CR — Critically Endangered

Population: ~104.7K

Trend: Decreasing ↓

Sumatran orangutan

CR — Critically Endangered

Physical Characteristics

Attribute	Bornean orangutan	Sumatran orangutan
Diet	Omnivore	—
Average Lifespan	35 years	—
Average Length	1.4 m	—
Average Weight	75.0 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.

Sumatran orangutan

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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。