The animated dog was kind of a let down, surely a real dog could have been used for the majority of the film. Also, there are some inaccuracies in the movie, like the pheasants in Alaska during this time period.. Ptarmigan for sure, but no Ringneck Pheasants at all during this time. There are some other ridiculous mistakes like that as well. I'll let you enjoy them.
That being said, not a terrible movie. I would recommend seeing Togo for a truly excellent dog in Alaska film.