Jack London 
The Call of the Wild [EPUB ebook] 

Buck is a domesticated dog living with his loving family on a ranch in California when he is stolen away and sold off into the brutish life of an Alaskan sled dog. In order to survive, Buck must withstand cruel treatment from his human masters, and fight to gain respect and dominance within his new pack. No longer able to rely on his family, Buck must adjust to this new life and answer the call of the wild.
The Call of the Wild is a story of Northern adventure and is author Jack London's most famous book. Over a century after its original publication, it continues to be taught in schools and has been adapted for the screen numerous times.