Children (20 direct children, 23 direct and indirect children):
Hippopotamus
(tree size 3)
Hippo
Hippopotamus antiquus
Cyprus dwarf hippopotamus
Hippopotamus minor
Malagasy hippopotamus
Malagasy hippo
Hippopotamus madagascariensis
Malagasy hippo
Hippopotamus creutzburgi
Hippopotamus gorgops
H. gorgops
Hippopotamus melitensis
Hippopotamus meltensis
Hippopotamus pentlandi
Hippopotamus major
Hippopotamus laloumena
Hippopotamus liberiensis
Hippopotamus imagunculus
Hippopotamus immaguncula
Hippopotamus sivalensis
Hippopotamus kaisensis
Hippopotamus sirensis
Hippopotamus medius
Hippopotamus minimus
Hippopotamus terrestris