Separate categories for pets and food, even among the edible
I understand that cats and dogs are kept as pets in Asia, as well, but that there's a difference in treatment between those animals and ones raised to be food, just like the distinction other cultures make between pets and food.
Farm kids learn early that you don't name the piglets. They're bacon and ham. If pressed, almost every American can recognize that fisheaters would not knowingly eat Nemo, nor does a pet bunny often wind up in the stew.