Trainer Kang and his students visit the owners of Yeonggu, a Jindo mix. Although the owners showed him much love and affection, Yeonggu grew up to be an ungrateful dog, biting his owners whenever he was upset. Trainer Kang thinks he’s one of the worst dogs he’s seen on the show, and that he needs strict training. Will the owners be able to follow his training well? Stay tuned to find out! (Source Viu)