Common Hippopotamus, Hippopotamus, Large Hippo vs koala

Hippopotamus amphibius compared with Phascolarctos cinereus

Key Differences

• Common Hippopotamus, Hippopotamus, Large Hippo is 150.0x heavier than koala.
• Common Hippopotamus, Hippopotamus, Large Hippo lives longer (40 years vs 15 years).

Taxonomic Classification

Rank	Common Hippopotamus, Hippopotamus, Large Hippo	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	Artiodactyla (偶蹄目)	Diprotodontia (カンガルー目)
Family	Hippopotamidae (Hippos)	Phascolarctidae (Koalas)
Genus	Hippopotamus (Hippos)	Phascolarctos (Koalas)
Species	Hippopotamus amphibius	Phascolarctos cinereus

Evolutionary Relationship

Common Hippopotamus, Hippopotamus, Large Hippo and koala share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

Common Hippopotamus, Hippopotamus, Large Hippo

VU — Vulnerable

Population: ~130.0K

Trend: Decreasing ↓

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Hippopotamus, Hippopotamus, Large Hippo	koala
Diet	Herbivore	Herbivore
Average Lifespan	40 years	15 years
Average Length	3.5 m	75 cm
Average Weight	1.5 t	10.0 kg

Habitat & Geographic Range

Common Hippopotamus, Hippopotamus, Large Hippo

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 5 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia and Kenya. Currently classified as Vulnerable 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.

Common Hippopotamus, Hippopotamus, Large Hippo

アフリカで最も危険な大型哺乳類であるカバ（Hippopotamus amphibius）は最大3,200kgに達し、サハラ以南アフリカの河川、湖、湿地に生息する。半水生で、体温を保つために1日最大16時間水中に沈んでいることがあり、夜間に陸上で草を食む。穏やかに見えるが非常に攻撃的で縄張り意識が強く、毎年数百人の死亡原因となっている。象牙の密猟と生息地の消失により個体数が脅かされており、危急種に指定されている。

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。