Common Rough Woodlouse vs Golden Eagle

Porcellio scaber compared with Aquila chrysaetos

Key Differences

• Common Rough Woodlouse is Least Concern while Golden Eagle is Near Threatened.

Taxonomic Classification

Rank	Common Rough Woodlouse	Golden Eagle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Malacostraca (Crustaceans)	Aves (Birds)
Order	Isopoda (Isopoda)	Accipitriformes (Hawks & Eagles)
Family	Porcellionidae	Accipitridae (Hawks & Eagles)
Genus	Porcellio	Aquila (True Eagles)
Species	Porcellio scaber	Aquila chrysaetos

Evolutionary Relationship

Common Rough Woodlouse and Golden Eagle share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Rough Woodlouse

LC — Least Concern

Golden Eagle

NT — Near Threatened

Population: ~300.0K

Trend: Stable →

Physical Characteristics

Attribute	Common Rough Woodlouse	Golden Eagle
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	85 cm
Average Weight	—	5.0 kg

Habitat & Geographic Range

Common Rough Woodlouse

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and deserts and xeric shrublands within the Indomalayan biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (South Africa), Asia (Japan, Sri Lanka), Europe (5 countries), North America (United States), and South America (Brazil).

Golden Eagle

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common Rough Woodlouse

<em>Porcellio scaber</em>, the common rough woodlouse, is a terrestrial isopod crustacean in the family Porcellionidae. One of the most widespread and abundant woodlouse species in the world, it has established itself across Europe, the Americas, Asia, Australia, and numerous oceanic islands, including populations documented in Belgium, Brazil, Denmark, Japan, and Norway. This synanthropic species typically inhabits decaying leaf litter, rotting wood, compost heaps, under stones, and in the soil of gardens, forests, and human-modified landscapes. It thrives in moist, sheltered microhabitats and shows some tolerance for drier conditions compared to related species. As a detritivore, the common rough woodlouse feeds primarily on decaying organic matter including leaf litter, rotting wood, fungi, and plant debris, playing a significant role in nutrient cycling and decomposition processes. The species reproduces sexually, with females brooding eggs and juveniles in a specialized brood pouch. Assessed as Least Concern by the IUCN, its cosmopolitan distribution and high adaptability make it one of the most ecologically resilient terrestrial isopods. It is easily identified by its rough, grey to dark brown dorsal surface with pale lateral markings. Biological traits such as average lifespan and typical body length remain variable across populations and are not uniformly documented in standardized databases.

Golden Eagle

Among the most powerful and widely distributed raptors in the world, golden eagles have wingspans reaching 2.2 meters and inhabit mountainous terrain across the Northern Hemisphere. Supreme aerial hunters, they use soaring flight and steep dives at speeds over 200 km/h to capture rabbits, hares, ground squirrels, and occasionally young deer and foxes. In many cultures they have been central to falconry traditions spanning millennia.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States