Genus
Hippopotamus Linnaeus, 1758
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Organism group | Gnathostomata |
| Superclass | Tetrapoda |
| Class | Mammalia |
| Order | Artiodactyla |
| Family | Hippopotamidae |
| Genus | Hippopotamus |
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Organism group | Gnathostomata |
| Superclass | Tetrapoda |
| Class | Mammalia |
| Order | Artiodactyla |
| Family | Hippopotamidae |
| Genus | Hippopotamus |