When hunting, animals appear as dots (red, yellow, or green). Around the dot 
will be a white circle. This circle is the animal's awareness. To make the 
circle smaller you must crouch, and while crouching move forward slowly.
Stop regularly to let the circle go down faster. If you make any sudden 
movements, walk in water or other noisy terrain, or stand up, the awareness
circle will rapidly grow larger. It is important to watch the awareness circle
because the animal you are hunting may run away if its a zebra, kudu, etc; or 
it may run toward you and attack if it is a cheetah, rhino, wild dog, etc.