"The Call of the Wild" by Jack London is a novel concerning a period of Klondike Gold Rush. The main character of this adventure novel is a dog named Buck. He was stolen from his home and sold as sled dog in Alaska. And there he reverts to a wild state. Buck fights to dominate other dogs, appeals to primitive instincts and becomes a leader of the wild, "The Call of the Wild" is a tale of survival and return to primitive instincts. London places Buck in conflict with humans, with other dogs and environment. This story shows that the civilization with its achievements is so fragile, and humans easily returns to a primitive state. "The Call of the Wild" with its popularity and success can be identified as one of the greatest novels of American literature.