This book tells the story of a domesticated dog named Buck who is stolen from his home in California and sold into service as a sled dog in Alaska. As he faces harsh conditions and brutal treatment, Buck must learn to adapt to the wild and harsh environment, ultimately reverting to his ancestral instincts in order to survive. The book explores themes of nature versus nurture, civilization versus wilderness, and the struggle for dominance.

The novel tells the story of a wolf-dog hybrid named White Fang, who endures harsh conditions in the Yukon during the 19th-century Klondike Gold Rush. The narrative follows White Fang's journey from a life in the wild to domestication. He experiences cruelty and brutality from both nature and humans, but eventually finds kindness and compassion with a man who rescues him from a dog-fighting ring. The book explores themes of survival, nature versus nurture, and redemption.