I was in Chobe Natl. Park a few years back riding around with a guide and a few other people. One elephant started charging, our guide was unimpressed, a little while later another did the same, also unimpressed. A third one a bit later and he started the truck and hightailed it. Later someone asked why the different response? In his perfect Brit accent the guide says "The first were just having a bit of sport, the last was looking to stomp the $h1t out of you."

From that moment on I decided it was good to have someone who knew what they were doing around.....