瓶鼻海豚 vs koala

Tursiops truncatus compared with Phascolarctos cinereus

Key Differences

• 瓶鼻海豚 is Least Concern while koala is Vulnerable.
• 瓶鼻海豚 is carnivore while koala is herbivore.
• 瓶鼻海豚 is 30.0x heavier than koala.
• 瓶鼻海豚 lives longer (45 years vs 15 years).

Taxonomic Classification

Rank	瓶鼻海豚	koala
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Cetacea (Whales & Dolphins)	Diprotodontia (雙門齒目)
Family	Delphinidae (Oceanic Dolphins)	Phascolarctidae (Koalas)
Genus	Tursiops (Bottlenose Dolphins)	Phascolarctos (Koalas)
Species	Tursiops truncatus	Phascolarctos cinereus

Evolutionary Relationship

瓶鼻海豚 and koala share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	瓶鼻海豚	koala
Diet	Carnivore	Herbivore
Average Lifespan	45 years	15 years
Average Length	3.0 m	75 cm
Average Weight	300.0 kg	10.0 kg

Habitat & Geographic Range

瓶鼻海豚

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

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.

瓶鼻海豚

作为研究最广泛、最受认可的海豚物种，宽吻海豚栖息于全球从沿岸浅水到远洋的温暖和温带海域。高度智能，大脑相对体型较大，展示自我认知、复杂交流和社会学习。生活在流动的分裂-融合社会中，合作围捕鱼群。是海洋生态系统健康的关键指示物种。

koala

澳大利亚东部和东南部的标志性有袋类动物，体重最大可达15千克，为了节省低热量桉树叶食物所提供的能量，每天最多睡眠22小时。高度特化，能够处理会致大多数其他哺乳动物死亡的有毒桉树成分，拥有专门适应解毒功能的肠道微生物群。因衣原体病、栖息地开发和气候变化导致种群锐减，2022年被列为濒危物种。