Went to South Africa as part of my MBA program earlier this year and spent a few extra days on safari. Saw "white rhino's" all over the place, got right up next to them and they completely ignored us. Then we came across a "black rhino" and our guide said in effect that this was a real treat as they hardly ever see them. Also said that we needed to be very quiet as they are extremely aggressive ... video seems to prove that out.