Japanese spurdog vs Komodo Dragon

Squalus japonicus compared with Varanus komodoensis

Taxonomic Classification

Rank	Japanese spurdog	Komodo Dragon
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	Elasmobranchii	Reptilia (爬行纲)
Order	Squaliformes (角鲨目)	Squamata (有鱗目)
Family	Squalidae	Varanidae (Monitor Lizards)
Genus	Squalus	Varanus (Monitor Lizards)
Species	Squalus japonicus	Varanus komodoensis

Evolutionary Relationship

Japanese spurdog and Komodo Dragon share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Japanese spurdog

EN — Endangered

Komodo Dragon

EN — Endangered

Population: ~3.5K

Trend: Stable →

Physical Characteristics

Attribute	Japanese spurdog	Komodo Dragon
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	2.6 m
Average Weight	—	70.0 kg

Habitat & Geographic Range

Japanese spurdog

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

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

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。