No no no. Coming across a Hippo out the water is not a lucky thing. Maybe nice to see, but these are the most dangerous mammals in Africa, kill more people than any other. They are actually quite scary, like Elephant and Rhinos, they have a way that they can move through the thickest of bush making virtually no sound. I have been in the bush and missed a herd of elephant that were all of 25-30m away from me. They just blend in and were so quiet it was not fun!