I hope the dog is ok too. It's not your fault. A few months ago I was trying to wrangle up a little white dog, scared out of his mind, running around the streets. I saw him get hit by a car right before my eyes, but he survived and ran off the street.
I still think about that guy.
Then before that, I was driving at night and I think I hit a cat. I heard a noise like I hit something, and looked in my rear view, and saw something dart off into the bushes off the road. I turned around and didn't see any blood or hear any moaning. I think it had to have been a cat, being that nimble, and hopefully I barely got him and he went between the wheels. It shook me up for a while. I felt so bad, I actually called out I'm sorry, like he could understand me.