"Rock-paper-scissors" is an old game, and these lizards have been playing it for way longer than us. Just a different version, with higher stakes. This is a game about life and death. Learn about why lefties are better at fighting, frequency-dependent selection, and quality vs. quantity all on this episode of species.   Bibliography: https://docs.google.com/document/d/1EkGLivXgxNnT9RTc3XICcsHHRUCxMwc-eOvDiSDJYSc/edit?usp=sharing