brown bear vs gorilla

Ursus arctos compared with Gorilla gorilla

Key Differences

  • brown bear is Extinct while gorilla is Critically Endangered.
  • brown bear is omnivore while gorilla is herbivore.
  • brown bear is 1.9x heavier than gorilla.
  • gorilla lives longer (40 years vs 25 years).

Taxonomic Classification

Rank brown bear gorilla
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) Primates (サル目)
Family Ursidae (Bears) Hominidae (Great Apes)
Genus Ursus (Bears) Gorilla (Gorillas)
Species Ursus arctos Gorilla gorilla

Evolutionary Relationship

brown bear and gorilla share a common ancestor at the Class level: Mammalia. (哺乳類)

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

gorilla

CR — Critically Endangered

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute brown bear gorilla
Diet Omnivore Herbivore
Average Lifespan 25 years 40 years
Average Length 2.0 m 1.7 m
Average Weight 300.0 kg 160.0 kg

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

gorilla

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 4 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Cameroon, Congo (Republic), Equatorial Guinea, and Gabon. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

brown bear

世界で最も広く分布するクマ科の種であるヒグマ(Ursus arctos)は、北アメリカとヨーロッパからロシアを経て日本まで、森林、ツンドラ、高山草原を占有します。成体はアラスカの沿岸個体群では最大700kgまで体重が増えることがあります。果物、根、魚、腐肉を食べる雑食動物で、ヒグマは景観全体に栄養素を分配するキーストーン種です。ほとんどの個体群は安定していますが、一部の亜種は脅威にさらされています。

gorilla

世界最大の霊長類であるニシゴリラは体重が最大180kgに達し、赤道アフリカの熱帯・亜熱帯の森林に生息する。主に草食性で、群れを守り社会的な対立を仲裁するシルバーバック雄が率いる家族集団を形成する。森林破壊、食肉目的の密猟、エボラウイルス感染症の流行により脅威にさらされており、近絶滅種(CR)に指定されている。

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