One day, a boy named Tim went to the park with his mom. They saw a fast dog running around. The dog was playing with a ball. Tim wanted to play with the dog too. So, he asked his mom, "Can I play with the dog?"
His mom said, "Yes, but be careful, Tim. The dog is very fast."
Tim ran and played with the fast dog. They had a lot of fun. But then, Tim fell down and hurt his leg. He cried and his mom came to help him. She said, "Oh no, Tim. We need to go home now."
At home, Tim's mom put him in bed. His leg hurt a lot. Tim was sad because he could not play anymore. The fast dog went back to the park without him. Tim learned to be more careful when playing with fast dogs.
