Komodo Dragon vs Niceforo Maria’s Oldfield Mouse

Varanus komodoensis compared with Thomasomys nicefori

Key Differences

• Komodo Dragon is Endangered while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Komodo Dragon	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Reptilia (Reptiles)	Mammalia (Mammals)
Order	Squamata (Lizards & Snakes)	Rodentia (Rodents)
Family	Varanidae (Monitor Lizards)	Cricetidae
Genus	Varanus (Monitor Lizards)	Thomasomys
Species	Varanus komodoensis	Thomasomys nicefori

Evolutionary Relationship

Komodo Dragon and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Komodo Dragon

EN — Endangered

Population: ~3.5K

Trend: Stable →

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Komodo Dragon	Niceforo Maria’s Oldfield Mouse
Diet	Carnivore	—
Average Lifespan	30 years	—
Average Length	2.6 m	—
Average Weight	70.0 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.

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Komodo Dragon

The Komodo dragon is the largest living lizard. It is found only on a few Indonesian islands.