Grief over nonhuman lives, whether felt in the context of species loss, animal agriculture or deceased companion animals, has gained regrettably limited philosophical attention. In this chapter, “animal ethical mourning” is explored from two perspectives: loss of animal lives and loss of human meanings. The argument is that such mourning is an important method of manifesting political and moral appreciation for both nonhuman lives and human ideals such as moral progress. Further, the claim is that animal ethical mourning is an act of kalon, which can reconnect us to the moral significance of our nonhuman kin. The concluding suggestion is that for this type of mourning to become commonplace, we need new rhetorics capable of summoning nonhuman ghosts.