Black Rhino in South Africa 

Black Rhino are often considered aggressive animals, but most often their 'aggressiveness' is nothing more than simple curiosity. This photo was taken by www.tailormadesafaris.co.za on one of their tours, and shows a black rhino that has just decided to approach. Seconds later it actually started running towards us, but it stopped about 10 meters away from our vehicle, having established the nature of the sounds he heard earlier, and thus having satisfied his curiosity. The 'charge' was an impressive sight nonetheless though!