Bad Dog? Good Dog!

 Yoon-Hee, and her brother Ji-Sung, go shopping.Yoon-Hee takes her friend's dog, Dingo, for a walk, but Dingo doesn't wanto to go for a walk. What does he really want?

Today, I read Bad Dog?Good Dog!, a book in the foundations reading library series. The dog takes the meet, and run away. Where does he go? What purpose of this action?