Once upon a time, there was a compassionate dog named Spot. Spot loved to play with his ball on the roof. One day, while Spot was on the roof, he saw a big bird. The bird reminded Spot of a friend he once knew. Spot wanted to play with the big bird, so he threw his ball towards it. But something unexpected happened! The big bird caught the ball in its beak and flew away. Spot was sad because he thought he lost his ball forever. Later that day, Spot was sitting on the roof, feeling sad. Suddenly, the big bird came back with the ball! It turns out, the big bird just wanted to play with Spot too. Spot was very happy, and they both played together all day long. And that's how Spot and the big bird became best friends.