One hot day, a cat and a dog were playing outside. They liked to jump and run. This was their exercise. They were very happy.
A bird saw them and wanted to play too. The bird flew down and said, "I want to do exercise with you!" The cat and the dog were surprised but happy. They all played together, running and jumping.
Then, the bird had an idea. "I can offer you something fun!" The bird took the cat and dog to a big tree. The bird showed them how to climb the tree. The cat and the dog did not know they could do this. They were so excited! Now, they had a new way to play and exercise together.
