Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The call to nature is the call to freedom...

Jack London's short novel reflects the story of a St. Bernard dog, Buck, who is stolen and sold as a sled-dog in the harsh Arctic North. It is the time of the Klondike Gold Rush, and Buck not only becomes aware of himself as a wild animal but as a dog which must answer to the nagging 'call of the wild.' A wondeful story, and indeed, a prelude to a great lesson which we all should learn and know well