I ran over a puppy once. I couldn't avoid it. I drove into a dead-end street, and while I was trying to turn around a whole litter of young pups and their mom all surrounded my car, barking at me. I eased forward as slowly as I could but when I cleared them I saw one pup in the mirror with his head smashed and his hind leg thrashing wildly in the air. I wasn't happy about that at all.