[ I was there in 1978-79 and 1981-82 and only saw dog once at a butcher shop. ]
You were in South Korea, in glorious North Korea they eat dogs, not because they can but because that is the only thing LEFT to eat in that socialist hellhole/paradise.
I doubt if there are enough dogs left in the DPRK to feed a small family for a week. People there eat tree bark and grass.