Common Rough Woodlouse vs Emperor Penguin

Porcellio scaber compared with Aptenodytes forsteri

Key Differences

• Common Rough Woodlouse is Least Concern while Emperor Penguin is Near Threatened.

Taxonomic Classification

Rank	Common Rough Woodlouse	Emperor Penguin
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum	Arthropoda (절지동물)	Chordata (척삭동물)
Class	Malacostraca (연갑강)	Aves (새)
Order	Isopoda (등각류)	Sphenisciformes (Penguins)
Family	Porcellionidae	Spheniscidae (Penguins)
Genus	Porcellio	Aptenodytes (Great Penguins)
Species	Porcellio scaber	Aptenodytes forsteri

Evolutionary Relationship

Common Rough Woodlouse and Emperor Penguin share a common ancestor at the Kingdom level: Animalia. (동물)

Conservation Status

Common Rough Woodlouse

LC — Least Concern

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Physical Characteristics

Attribute	Common Rough Woodlouse	Emperor Penguin
Diet	—	Carnivore
Average Lifespan	—	20 years
Average Length	—	1.1 m
Average Weight	—	40.0 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).

Emperor Penguin

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. 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.

Emperor Penguin

세계에서 가장 큰 펭귄인 황제펭귄(Aptenodytes forsteri)은 키가 최대 1.2m에 몸무게가 45kg에 달하며, 지구상에서 가장 혹독한 환경인 남극 대륙에 서식합니다. 영하 60°C 이하의 한겨울 암흑 속에서 번식하며, 수컷이 암컷이 바다에 있는 동안 65일 동안 발 위에서 육아낭 아래에 알 한 개를 품습니다. 수천 마리가 모인 무리에서 개체들이 따뜻한 중심부를 순환하는 이른바 허들링 행동은 협동적 생존의 훌륭한 사례입니다.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway