Eurasian Eagle-Owl vs Komodo Dragon

Bubo bubo compared with Varanus komodoensis

Key Differences

Komodo Dragon is 23.3x heavier than Eurasian Eagle-Owl.
Komodo Dragon lives longer (30 years vs 20 years).

Taxonomic Classification

Rank	Eurasian Eagle-Owl	Komodo Dragon
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Reptilia (Reptiles)
Order	Strigiformes (Owls)	Squamata (Lizards & Snakes)
Family	Strigidae (True Owls)	Varanidae (Monitor Lizards)
Genus	Bubo (Eagle Owls)	Varanus (Monitor Lizards)
Species	Bubo bubo	Varanus komodoensis

Evolutionary Relationship

Eurasian Eagle-Owl and Komodo Dragon share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Eurasian Eagle-Owl

EN — Endangered

Population: ~400.0K

Trend: Stable →

Komodo Dragon

EN — Endangered

Population: ~3.5K

Trend: Stable →

Physical Characteristics

Attribute	Eurasian Eagle-Owl	Komodo Dragon
Diet	Carnivore	Carnivore
Average Lifespan	20 years	30 years
Average Length	70 cm	2.6 m
Average Weight	3.0 kg	70.0 kg

Habitat & Geographic Range

Eurasian Eagle-Owl

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Found across Europe (9 countries) and South America (Ecuador). 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.

Eurasian Eagle-Owl

The world's largest owl species by height and weight, Eurasian eagle-owls have wingspans up to 1.9 meters and inhabit rocky landscapes, forest edges, and cliffs from Europe across Asia to China. Silent nocturnal hunters with powerful talons, they prey on rabbits, hares, foxes, and even other raptors. Their deep, resonant hooting carries over great distances. Relatively stable in population, though persecuted historically.