"Susikoira" is an adventure novel by the American writer Jack London. The main character, a dog named Buck, feels like a stranger among people and wants to return to nature. Starting from the luxurious life of the owner of a huge estate, Buck finds himself in the harsh conditions of Alaska, where he has to survive in the merciless world of harsh nature. This incredibly intense and exciting story tells of courage, dedication and the superiority of the wild over civilization. "Susikoira" is a book that fascinates the reader with its deep philosophy and sense of adventure.