Beautiful park, in one day I could see giraffes, e...

Beautiful park, in one day I could see giraffes, elephants, buffalo, rhinoceros, hippos, zebras, crocodiles, hyenas ... Unfortunately impossible to see a lion.
The secret is to go to water points or near rivers. Also, on opening and closing.
No need to take the dirt tracks, the roads are sufficient because they allow to stop at the same places as other people who will have seen the animal that you would not have seen. The tracks can see herds only, but you have to be lucky.