elk vs koala

Cervus elaphus compared with Phascolarctos cinereus

Key Differences

elk is 24.0x heavier than koala.
elk lives longer (20 years vs 15 years).

Taxonomic Classification

Rank	elk	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	Cervidae (Deer)	Phascolarctidae (Koalas)
Genus	Cervus (True Deer)	Phascolarctos (Koalas)
Species	Cervus elaphus	Phascolarctos cinereus

Evolutionary Relationship

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

表示 Class: Mammalia

Conservation Status

elk

VU — Vulnerable

Trend: Stable →

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	elk	koala
Diet	Herbivore	Herbivore
Average Lifespan	20 years	15 years
Average Length	2.1 m	75 cm
Average Weight	240.0 kg	10.0 kg

Habitat & Geographic Range

elk

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and temperate broadleaf and mixed forests, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (South Africa), Asia (Afghanistan, Indonesia), Europe (11 countries), North America (Mexico), Oceania and the Pacific (Australia, New Zealand), and South America (Argentina, Chile, Peru). 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.

elk

アカシカとも呼ばれるエルク（Cervus elaphus）は、枝角を持つ雄が最大240kgに達するシカ科最大種の一つです。ヨーロッパ、アジア、北アメリカの温帯林や草原に分布し、歴史的には個体群が別の亜種として区別されていました。雄は毎年枝角を落として再生させ、秋の繁殖期には激しい鳴き声競争を繰り広げます。分布域全体にわたって重要なジビエ動物であり、保全対象種です。

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。