Explanation:
it depends on which part he ran over. dogs are said to be of high strength, any action of inadequate pressure or power would not necessarily be fatal. if the right amount of energy is used at the right spot, for example an artery running through the neck ( like the carotid artery) or something. but since the dog apparently vanished, we could make out that it is not exactly dead
Study on what you have been learning, get a good night rest & eat well. Good Luck!!
C? Least useful information, and includes an opinion, both uncomforting and personal.