Rhinos are big heavily armored mammals that you will find all around Africa, most of the time they are peaceful herbivores but if they are provoked they will charge.
Here is a photo of a rhino.

This rhino's horn is strong enough to kill three grown men, if you are charged by a rhino and you survive you will consider it a miracle.
How to survive a rhino:
If you just happen to be riding around in a jeep or car in Africa and you come across a rhino, if you don't want it to charge you, turn off everything in the car and keep still no matter what until the rhino goes away.
How to tell if a rhino is about to charge:
If you see a rhino with its horn on the ground, it means it it going to charge, it will look a bit like this.

So if you see a rhino like this, stay still and don't move.