I ran over a dog once on my bike. I didn't mean to. It was in front of me, and I was looking to the left a bigger, meaner looking dog, when suddenly I felt a bump and it was under my bike and I kept peddling and it went under the rear tire. It ran off, so I think it was ok.
I also ran over a dog the first time I drove a car. True story. First day ever, driver ed, there is this dog in the middle of the road. I got up to it and it wouldn't move. The instructor was like, "Honk at it." So I did, but it sat there sniffing it's butt. "Just keep going slow, it will move." Well, no, it just sat there. But it was small enough I just drove over it and didn't hurt it. We turned around it was still there sniffing the ground or it's butt.