WTF people? Who are these heartless bastards that have such little disregard for human lives? Even if you aren't a fan of animals, the little boy watched his dog get hit and you drove off!! I can't wait until they publish your name in the paper so everyone will know exactly the kind of person you are. I would have immediately stopped, called 911 and blocked traffic with my SUV until I was able to get the child out of the road called his parents. This kid could have been hit next!! How horrible, selfish and thoughtless you are. 

Let's find out who you are. I only hope karma comes quickly and you learn firsthand how it feels. You are a total douchebag. When karma comes, don't come crying, because honey, no one is coming to help you.