I love this video! There are just so many good examples of how chimps play. Everything is in the context of play; there are chimps biting, hitting, kicking, and slapping. Now, you might be wondering how I know it is in the play context. Well, some ways you could tell are their lower lip is loose, they are not showing their top teeth, no one is pilo, and if you listen really carefully that breathy sound is laughing. I can say I would never let one of my friends bite me, but as chimps this is how they play!
Example of a play face- Missy’s top lip is covering her teeth and the bottom teeth can show: