One day, a cat and a dog were playing near a window. The window was very filthy. The cat said, "Let's clean the window!"
The dog agreed and said, "I will offer my help." They worked together to clean the window. Soon, the window was shiny and clean.
As they were cleaning, they saw a big bird outside. The bird flew right into the window! The cat and the dog were very surprised. The bird said, "Oops! I did not see the window because it was so clean!" They all laughed and became friends.
