If inflicting terrible suffering and death on nonhuman animals who can feel pleasure, pain, and a wide range of emotions represents a real harm—and most people acknowledge, at some level, that it does—then no one should be offended by the suggestion that this harm must stop, just as other harms, once taken for granted as permissible, are now almost universally condemned.
~ Sherry F. Colb (September 2, 2009)