One time I hit a cat. I wasn't 100% sure what I hit, so I turned around a few blocks later to double check. I saw a grey cat with a pink collar in the middle of the road right where I was sure I had hit something. I teared up a bit, thinking of a small girl finding the body and crying because of the trauma I had put her through.
But one time I hit a possum. I was a few seconds from hitting him when he paused in the middle of the road, looked up, and got hit by my Ford Explorer as soon as his head was perpendicular to the road. I laughed hysterically for about a mile. What contrasting experiences.