Animals below a certain intelligence threshold either ethically can be bred for meat or they can't. I have no idea why we should be appalled at one species getting bred for slaughter, but not another. People used to keep pigs as pets for a time, and we still ate them during this period. Hell, some people kept pigs as pets for a time, and then ate them later! How's that for barbaric?
If Koreans want to eat Fido - so be it, I say. Hell, these are people who purposely rot cabbage for the purposes of eating it later. Unspeakably hideous looking/smelling foods is just what the Koreans do.