Precursors of Morality
Z: Some very interesting (and amusing) experiments although you can't convince me that they constitute "morality".
Frans de Waal: Moral behavior in animals
Me: "Morality" comes with abstract thought, which obviously these animals have in a limited capacity. But moral behavior exists in these animals, indicating that moral instincts precede the development of abstract moral thought, and that certainly "morality" didn't emerge in humans out of nowhere; it appeared amidst a rich biological background of moral behavior and moral instincts which constitute the precursors of morality.