Common Rengas vs Komodo Dragon

Gluta wallichii compared with Varanus komodoensis

Key Differences

Common Rengas is Least Concern while Komodo Dragon is Endangered.

Taxonomic Classification

Rank	Common Rengas	Komodo Dragon
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Magnoliopsida (モクレン綱)	Reptilia (爬虫類)
Order	Sapindales (ムクロジ目)	Squamata (有鱗目)
Family	Anacardiaceae	Varanidae (Monitor Lizards)
Genus	Gluta	Varanus (Monitor Lizards)
Species	Gluta wallichii	Varanus komodoensis

Conservation Status

Common Rengas

LC — Least Concern

Komodo Dragon

EN — Endangered

Population: ~3.5K

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Common Rengas

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Common Rengas

<em>Gluta wallichii</em>, the common rengas, is a tropical tree in the family Anacardiaceae, order Sapindales, related to mangoes, cashews, and poison ivy. The species is assessed as Least Concern on the IUCN Red List. Rengas trees typically inhabit lowland and hill dipterocarp forests, as well as peat swamp and freshwater swamp forests across Southeast Asia, particularly in the Malay Peninsula and Borneo. The wood of <em>Gluta wallichii</em> is valued commercially for timber, though the sap contains urushiol-like compounds that can cause severe dermatitis in sensitive individuals, a trait shared with other members of the Anacardiaceae family. The genus Gluta is known for large, canopy-forming trees that typically reach substantial heights in undisturbed rainforest settings. As a flowering angiosperm, rengas produces fruit that serves as food for forest birds and mammals including hornbills and civets, contributing to seed dispersal. Biological traits such as lifespan, body measurements, and detailed diet ecology remain poorly documented for this taxon in published literature. Threats to this species include deforestation, logging, and conversion of peat swamp forests for agriculture, particularly oil palm cultivation, across its Southeast Asian range.