A white dog and a black dog running side by side on the grass while onlookers watch .
Chances are about even that onlookers watch two vicious dogs try to kill a squirrel .
It is impossible that onlookers watch two vicious dogs try to kill a squirrel .
Chances are about even that onlookers watch two vicious dogs try to kill a squirrel .
Onlookers watch two vicious dogs try to kill a squirrel .