The Wind in the Willows by Kenneth Grahame is about four anthropomorphic animals (animals who act like people)--Mole, Rat, Toad, and Badger. Mole first meets Rat when Mole tires of spring cleaning and decides to explore the world. Mole knows little of the world, and he has never seen a river. When he comes to the river, he meets Rat, who introduces his new friend to the wider world. Eventually, Rat takes Mole to Toad Hall, where the rich Toad lives. Toad is an eccentric character who constantly wants to try new things, including riding on a caravan and eventually becoming a motorcar driver. Mole is eager to meet the shy Badger, and he eventually does when he wanders out in a snowstorm, with Rat following him to keep him safe. Mole also discovers the tranquility that listening to the wind in the trees can bring.
Much of the later parts of the book are about the misadventures of Toad, who is constantly crashing cars. Although Badger, Rat, and Mole try to prevent him from leaving Toad Hall, Toad escapes and is sent to jail for stealing a car. He escapes, and eventually Rat takes him back home, where the four friends rid Toad Hall of the weasels that had taken it over and live peacefully ever after.