Komodo Dragon vs Nile Crocodile

Varanus komodoensis compared with Crocodylus niloticus

Key Differences

• Komodo Dragon is Endangered while Nile Crocodile is Least Concern.
• Nile Crocodile is 10.7x heavier than Komodo Dragon.
• Nile Crocodile lives longer (70 years vs 30 years).

Taxonomic Classification

Rank	Komodo Dragon	Nile Crocodile
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	Reptilia (爬行纲)	Reptilia (爬行纲)
Order	Squamata (有鱗目)	Crocodylia (Crocodilians)
Family	Varanidae (Monitor Lizards)	Crocodylidae (Crocodiles)
Genus	Varanus (Monitor Lizards)	Crocodylus (True Crocodiles)
Species	Varanus komodoensis	Crocodylus niloticus

Evolutionary Relationship

Komodo Dragon and Nile Crocodile share a common ancestor at the Class level: Reptilia. (爬行纲)

Conservation Status

Komodo Dragon

EN — Endangered

Population: ~3.5K

Trend: Stable →

Nile Crocodile

LC — Least Concern

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Komodo Dragon	Nile Crocodile
Diet	Carnivore	Carnivore
Average Lifespan	30 years	70 years
Average Length	2.6 m	5.0 m
Average Weight	70.0 kg	750.0 kg

Habitat & Geographic Range

Komodo Dragon

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 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Indonesia. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Nile Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

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

Komodo Dragon

科莫多巨蜥（Varanus komodoensis）是现存最大的蜥蜴，仅分布于印度尼西亚的少数岛屿。

Nile Crocodile

尼罗鳄是世界上最大的爬行动物之一，广泛分布于撒哈拉以南非洲地区。