Common Hippopotamus, Hippopotamus, Large Hippo vs Polynesian Tree Snail

Hippopotamus amphibius compared with Samoana attenuata

Key Differences

• Common Hippopotamus, Hippopotamus, Large Hippo is Vulnerable while Polynesian Tree Snail is Critically Endangered.

Taxonomic Classification

Rank	Common Hippopotamus, Hippopotamus, Large Hippo	Polynesian Tree Snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Artiodactyla (Even-toed Ungulates)	Stylommatophora (Stylommatophora)
Family	Hippopotamidae (Hippos)	Partulidae
Genus	Hippopotamus (Hippos)	Samoana
Species	Hippopotamus amphibius	Samoana attenuata

Evolutionary Relationship

Common Hippopotamus, Hippopotamus, Large Hippo and Polynesian Tree Snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Hippopotamus, Hippopotamus, Large Hippo

VU — Vulnerable

Population: ~130.0K

Trend: Decreasing ↓

Polynesian Tree Snail

CR — Critically Endangered

Physical Characteristics

Attribute	Common Hippopotamus, Hippopotamus, Large Hippo	Polynesian Tree Snail
Diet	Herbivore	—
Average Lifespan	40 years	—
Average Length	3.5 m	—
Average Weight	1.5 t	—

Habitat & Geographic Range

Common Hippopotamus, Hippopotamus, Large Hippo

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 5 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia and Kenya. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Polynesian Tree Snail

Habitat

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

Common Hippopotamus, Hippopotamus, Large Hippo

Africa's most dangerous large mammal, common hippos can reach 3,200 kg and inhabit rivers, lakes, and wetlands of sub-Saharan Africa. Semi-aquatic, spending up to 16 hours daily submerged to keep cool, they graze on land at night. Despite appearing docile, hippos are extremely aggressive and territorial, responsible for hundreds of human fatalities annually. Vulnerable, with populations threatened by habitat loss and illegal hunting for ivory tusks.