Buck. Jack London's The Call of the Wild
Buck is the story of Ryann (Ariel Gade) a 9-year old girl visiting her grand-father (Christopher Lloyd) in Montana. When a wild wolf/dog hybrid shows up injured on the back porch one night, Ryann wants to take him back to Boston as a pet, but her grand-father knows the animal will eventually have to return to the wild.
To help his grand-daughter understand, he begins to read her Jack London’s ‘Call of the Wild’ each night ... but Ryann has ideas of her own, and helps a local boy train the magnificent animal to become a sled dog leader.