When we go to town, me and the boys like to play "roadkill bingo".
Each player picks three animals. The first one to spot all three of their animals dead on the road wins. A pretty simple game really. Sometimes you can go for the mystery animal. That's any critter that's been splatted so much that it's unidentifiable.
Sometimes we have such an argument about what something is or isn't we have to stop the truck and check.