koala vs 疣鼻天鵝〔赤嘴天鵝〕

Phascolarctos cinereus compared with Cygnus olor

Key Differences

• koala is Vulnerable while 疣鼻天鵝〔赤嘴天鵝〕 is Near Threatened.
• 疣鼻天鵝〔赤嘴天鵝〕 lives longer (20 years vs 15 years).

Taxonomic Classification

Rank	koala	疣鼻天鵝〔赤嘴天鵝〕
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	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Diprotodontia (雙門齒目)	Anseriformes (雁形目)
Family	Phascolarctidae (Koalas)	Anatidae
Genus	Phascolarctos (Koalas)	Cygnus
Species	Phascolarctos cinereus	Cygnus olor

Evolutionary Relationship

koala and 疣鼻天鵝〔赤嘴天鵝〕 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

疣鼻天鵝〔赤嘴天鵝〕

NT — Near Threatened

Population: ~600.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	koala	疣鼻天鵝〔赤嘴天鵝〕
Diet	Herbivore	Herbivore
Average Lifespan	15 years	20 years
Average Length	75 cm	1.5 m
Average Weight	10.0 kg	12.0 kg

Habitat & Geographic 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.

疣鼻天鵝〔赤嘴天鵝〕

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 8 distinct biome types.

Range

Widely distributed across Africa (South Africa), Asia (4 countries), Europe (24 countries), North America (Canada, Dominican Republic, United States), Oceania and the Pacific (New Zealand), and South America (Colombia, Peru). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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。

疣鼻天鵝〔赤嘴天鵝〕

大天鹅（Cygnus olor）是全球最常见的天鹅，也是最大的飞禽之一，体重最高可达 15 千克，栖息于欧亚大陆的湖泊、河流和沿海湾，北美和澳大利亚也有广泛引入种群。尽管名字暗示其沉默，但大天鹅会发出嘶嘶声、咕噜声和振翅声。雄鸟极力捍卫领地，有力的翅膀打击足以伤人或令狗溺毙。