"Ratty" is a charming character from the beloved children's book, "The Wind in the Willows" by Kenneth Grahame. He is a water rat who enjoys a leisurely life along the riverbank, often indulging in picnics and boating. Ratty is known for his friendly nature and love for adventure, making him a loyal friend to Mole, another main character in the story. In the tale, Ratty embodies the spirit of friendship and the joys of nature. He often guides Mole through various escapades, teaching him about the beauty of their surroundings. Together, they explore the river and meet other characters, like Toad, adding excitement to their adventures.