Once upon a time, there was a famous dog named Spot. Spot was very good at finding things. One day, Spot found a pretty crystal. The crystal was shiny and made Spot very happy.
Spot wanted to show his friends the crystal, so he went to the park. When he got to the park, he saw his friends playing. Spot wanted to play too, but he did not want to lose the crystal. So, he put the crystal in his mouth and tried to play. 
While playing, Spot tried to bark, but the crystal fell out of his mouth. All his friends saw the crystal fall and laughed. Spot felt embarrass. But his friends said, "Don't worry, Spot. We all make mistakes." They helped him find the crystal, and they all played together. Spot was happy to have such good friends.
