brown bear vs Irrawaddy dolphin

Ursus arctos compared with Orcaella brevirostris

Key Differences

• brown bear is Extinct while Irrawaddy dolphin is Endangered.

Taxonomic Classification

Rank	brown bear	Irrawaddy dolphin
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	Carnivora (食肉目)	Cetacea (Whales & Dolphins)
Family	Ursidae (Bears)	Delphinidae (Oceanic Dolphins)
Genus	Ursus (Bears)	Orcaella
Species	Ursus arctos	Orcaella brevirostris

Evolutionary Relationship

brown bear and Irrawaddy dolphin share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Irrawaddy dolphin

EN — Endangered

Physical Characteristics

Attribute	brown bear	Irrawaddy dolphin
Diet	Omnivore	—
Average Lifespan	25 years	—
Average Length	2.0 m	—
Average Weight	300.0 kg	—

Habitat & Geographic Range

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

brown bear

棕熊是世界上分布最广泛的熊类物种，从北美和欧洲横跨俄罗斯至日本，占据森林、冻原和高山草甸。阿拉斯加沿海种群的成年个体体重可达700公斤。棕熊是杂食性动物，以浆果、根茎、鱼类和腐肉为食，是跨景观分配养分的关键物种。大多数种群稳定，但部分亚种受到威胁。