I ran over my neighbor's dog
I'm not gonna ask why, but are you scared of what will happen?
Yes, I'm a bit afraid because I don't know how they will react, I mean they love the dog very much.
I see, it's good you have remorse and aren't acting like a sociopath. If it was truly an accident, I hope they can forgive you and understand.
I have to pay for what I have done? That is a good lesson for me to learn. I didn't think about that.
I'm not necessarily saying you need to pay for anything.  I think a heartfelt, honest apology will be more than enough for most people in a situation like this.