Photo : "Dog Day Afternoon" (200406 Stephane MOT)
People selling dog meat don't like to be taken pictures of. These lads do an even less pleasant job : they raise and kill the said dogs.
You cannot see the animals. Only hear them cry and scream behind doors and walls.
Or you see them dead, as dog meat or "gaegogi". In a stew or on a counter. In a stew you cannot tell for sure (I actually had some once without knowing what it was), but on a counter there is no way of mistaking.