

One day, a hippo and a mouse were friends. They liked to walk by the river and look at the fish. The hippo was big and strong, and the mouse was small and fast. They helped each other when they were in trouble.
One day, they saw a big tree with red fruits. The mouse said, "Look, hippo, those fruits look yummy. Let's try some." The hippo said, "OK, mouse, but be careful. They might be bitter." The mouse said, "Don't worry, hippo, I have a good nose. I can smell if they are sweet or bitter."
The mouse climbed the tree and picked a fruit. He bit into it and made a face. It was very bitter. He spat it out and said, "Yuck, hippo, this fruit is bitter. Don't eat it." The hippo said, "Thank you, mouse, for warning me. You are a good friend." The mouse said, "You are welcome, hippo. You are a good friend too."
They walked away from the tree and found a patch of grass. They ate the grass and drank some water. They were happy and full. They said, "We don't need bitter fruits. We have each other." They hugged and smiled. They were the best friends in the world.
