Rent Call of the Wild (2009)

Whilst Ryann (Ariel Gade) is staying with her Grandpa Bill (Christopher Lloyd) a wild dog shows up injured on the back porch one night. Ryann and a local friend believe they can train the magnificent animal to become a sled dog leader but first they must try and persuade Grandpa, who knows the animal will eventually have to return to the wild. Then they must stand up to the local bully who wants to claim the dog as his own.