"Petson is sad" is a wonderful book by the Swedish writer Svetlana Gate. This touching tale tells about a gray cat named Petson, who suddenly finds himself in a difficult situation. He loses the main thing in his life - cheerfulness and life optimism. His friends, including the sweet Lille-Glum and the clever Mr. Fox, do their best to help Petson get out of his depressed state. The plot of the book is multi-faceted and very pleasing to young readers, because it teaches us that complications in life can be overcome if we believe in ourselves and friendship. Also in this book, the topic of support and understanding is extremely important, which helps us understand the value of warm relationships. "Petson is sad" is a fairy tale that takes a new look at the topic of depression through a child's perspective, and also reminds us of the importance of human connections and the warmth of the heart. A book that makes you think and feel the closeness of friends, regardless of life's difficulties.