giraffe vs koala

Giraffa camelopardalis compared with Phascolarctos cinereus

Key Differences

giraffe is 120.0x heavier than koala.
giraffe lives longer (25 years vs 15 years).

Taxonomic Classification

Rank	giraffe	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	Giraffidae (Giraffes)	Phascolarctidae (Koalas)
Genus	Giraffa (Giraffes)	Phascolarctos (Koalas)
Species	Giraffa camelopardalis	Phascolarctos cinereus

Evolutionary Relationship

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

表示 Class: Mammalia

Conservation Status

giraffe

VU — Vulnerable

Population: ~117.0K

Trend: Decreasing ↓

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	giraffe	koala
Diet	Herbivore	Herbivore
Average Lifespan	25 years	15 years
Average Length	5.5 m	75 cm
Average Weight	1.2 t	10.0 kg

Habitat & Geographic Range

giraffe

Habitat

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

Range

Found in Ecuador. 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.

giraffe

地球上で最も背の高い動物であるキリン（Giraffa camelopardalis）は体高が5.5mに達し、体重は最大1,750kgにもなる。すべての哺乳類と同じ7個の頸椎からなる長い首は、アフリカのサバンナや疎林のアカシアの木に食物を求めて進化した。永続的な絆を持たない緩やかな群れで生活する社会的動物で、超低周波音と身振りで意思疎通する。生息地の喪失と密猟により個体数が減少している危急種である。

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。