Predatorial Behavior

Isn't it interesting when you see either on the discovery channel or in pictures, Zebra's leisurly grazing around a pride of lions, who lay dozing peacefully in the sun. Why aren't the Zebra's afraid? How come it doesn't bother them to be so close to these beasts, when they are hunted everyday by them?
The answer is, the Zebra's aren't afraid of the predators themselves, they are afraid of predatorial behavior. The same applies to horses, horses aren't afraid of us, they're afraid of our predatorial behavior. 
Insert from http://beheco.oxfordjournals.org/content/17/2/246.abstract:
In predator-prey encounters, many factors influence risk perception by prey and their decision to flee. Previous studies indicate that prey take flight at longer distances when they detect predators at longer distances and when the predator's behavior indicates...

Interesting right?
Keep it natural,
             Kaylee