common bottlenose dolphin vs Nile Crocodile

Tursiops truncatus compared with Crocodylus niloticus

Key Differences

Nile Crocodile is 2.5x heavier than common bottlenose dolphin.
Nile Crocodile lives longer (70 years vs 45 years).

Taxonomic Classification

Rank	common bottlenose dolphin	Nile Crocodile
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Reptilia (爬虫類)
Order	Cetacea (Whales & Dolphins)	Crocodylia (Crocodilians)
Family	Delphinidae (Oceanic Dolphins)	Crocodylidae (Crocodiles)
Genus	Tursiops (Bottlenose Dolphins)	Crocodylus (True Crocodiles)
Species	Tursiops truncatus	Crocodylus niloticus

Evolutionary Relationship

common bottlenose dolphin and Nile Crocodile share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	common bottlenose dolphin	Nile Crocodile
Diet	Carnivore	Carnivore
Average Lifespan	45 years	70 years
Average Length	3.0 m	5.0 m
Average Weight	300.0 kg	750.0 kg

Habitat & Geographic Range

common bottlenose dolphin

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).

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Egypt, Kenya, Madagascar, South Africa, and Tanzania.

common bottlenose dolphin

最も研究され、最も知られているイルカ種であるバンドウイルカは、沿岸の浅瀬から外洋まで世界中の温暖な海域と温帯海域に生息します。体に対して大きな脳を持つ高度に知性的なこの種は、自己認識、複雑なコミュニケーション、社会的学習を示します。流動的な分裂融合社会で生活し、魚を追い込むために協力します。海洋生態系の健全性の重要な指標種です。