| Singulier | Pluriel |
|---|---|
| hippopotamus \ˌhɪp.ə.ˈpɑt.ə.məs\ |
hippopotamuses \ˌhɪp.ə.ˈpɑt.ə.mə.sɪz\ |
hippopotamuses
Hippopotamuses brought to Colombia as part of Escobar's private zoo at his ranch, Hacienda Napoles, have bred so successfully that there is serious concern over their environmental impact and human safety, according to a new study by researchers at Mexican and Colombian universities.— (Jack Guy, « Colombia's 'cocaine hippos' must be culled, scientists say -- but not everyone agrees », CNN, 18 janvier 2021)