Emperor Penguin vs Shelled Slug

Aptenodytes forsteri compared with Testacella haliotidea

Key Differences

• Emperor Penguin is Near Threatened while Shelled Slug is Data Deficient.

Taxonomic Classification

Rank	Emperor Penguin	Shelled Slug
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Mollusca (มอลลัสกา)
Class	Aves (นก)	Gastropoda (ชั้นแกสโทรโพดา)
Order	Sphenisciformes (Penguins)	Stylommatophora (Stylommatophora)
Family	Spheniscidae (Penguins)	Testacellidae
Genus	Aptenodytes (Great Penguins)	Testacella
Species	Aptenodytes forsteri	Testacella haliotidea

Evolutionary Relationship

Emperor Penguin and Shelled Slug share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Shelled Slug

DD — Data Deficient

Physical Characteristics

Attribute	Emperor Penguin	Shelled Slug
Diet	Carnivore	—
Average Lifespan	20 years	—
Average Length	1.1 m	—
Average Weight	40.0 kg	—

Habitat & Geographic Range

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.

Shelled Slug

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Widely distributed across Europe (9 countries), North America (United States), and Oceania and the Pacific (New Zealand).

Emperor Penguin

The world's largest penguin, emperor penguins stand up to 1.2 meters and weigh 45 kg, inhabiting the Antarctic continent in some of the most extreme conditions on Earth. They breed in midwinter darkness at temperatures below -60°C, with males incubating single eggs on their feet under a brood pouch for 65 days while females are at sea. Their huddling behavior — cycling individuals through the warm center of thousands-strong groups — is a masterclass in cooperative survival.