 As discussed in  §5,  the moral vegetarian case against killing, hurting, or raising animals for food might well be extended to killing, hurting, or raising animals in other circumstances. What, if anything, do those cases show about the ethical treatment of pets (Bok 2011; Overall (ed.) 2017; Palmer 2010 and 2011)? Of zoo creatures (DeGrazia 2011; Gruen 2011: Chapter 5; Gruen 2014)? 