I am a hippo, but it doesn't matter

In an ordinary Moscow apartment lives an ordinary hippo named Benedict. He is seven and a half years old. He loves to wash down sugar cookies with milk, listen to frogs croaking, and read books. No one has ever told Benedict in his life that being a hippo is bad. But as soon as he went to school, a classmate announced that Benedict is a silly hippo and that he doesn't belong at the desk. What should he do now? How to tell Dad that he no longer wants to go to school? And can you be friends with someone who bullies you?..