gray wolf vs koala

Canis lupus compared with Phascolarctos cinereus

Key Differences

  • gray wolf is Critically Endangered while koala is Vulnerable.
  • gray wolf is carnivore while koala is herbivore.
  • gray wolf is 4.5x heavier than koala.
  • koala lives longer (15 years vs 13 years).

Taxonomic Classification

Rank gray wolf 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 Carnivora (ネコ目) Diprotodontia (カンガルー目)
Family Canidae (Dogs & Wolves) Phascolarctidae (Koalas)
Genus Canis (Dogs & Wolves) Phascolarctos (Koalas)
Species Canis lupus Phascolarctos cinereus

Evolutionary Relationship

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

Conservation Status

gray wolf

CR — Critically Endangered

Population: ~300.0K

Trend: Stable →

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute gray wolf koala
Diet Carnivore Herbivore
Average Lifespan 13 years 15 years
Average Length 1.6 m 75 cm
Average Weight 45.0 kg 10.0 kg

Habitat & Geographic Range

gray wolf

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, deserts and xeric shrublands, and tropical and subtropical dry broadleaf forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Seychelles), Asia (Japan), Europe (5 countries), North America (7 countries), Oceania and the Pacific (Marshall Islands, Vanuatu), and South America (5 countries). 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.

gray wolf

最も広い分布域を持つ野生のイヌ科動物であるハイイロオオカミは、北アメリカからユーラシアにかけてのツンドラ、森林、草原などの多様な生息地に分布します。優位な繁殖ペアに率いられた家族単位の群れで生活する高度に社会的な動物です。キーストーン捕食者として獲物個体群を調整し、生態系の構造を根本的に形成することは、イエローストーンでの再導入により実証されています。かつて激しく迫害されましたが、多くの地域で個体群は回復しつつあります。

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。

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