None.

How dogs were brutally handled and killed for food in South Korea are explained by people.

The opening montage has some brief scenes of dogs suffering in the dog meat trade. A worker is briefly seen handling a dog roughly. Nothing graphic is shown.

None.

Antibiotics and vaccination on dogs mentioned, not seen.

The opening montage of dogs in the South Korean dog meat trade doesn't have anything graphic, but can be upsetting for some people. The same goes with all the talking about the abuse and killing.