Obviously there are those that would say that the winner would be determined solely by the setting of the battle. That is to say that the rhino would win on land and the hippo in water. However, to me its no contest, the hippo is a superior animal physically and mentally. The hippo would take the rhino to town, check out my evidence for support.
Come on the hippo may be strong and have a tough jaw but how would he handle a huge horn gorging into his side? Answer...he wouldn't. The rhino is way to quick for the slow moving hippo and the rhino's sharp horn will pierce right through the thick skin of the hippo.
when i see pics of a hippo, i want to hug it.