My son is a dog fanatic and recently found this movie. I don't want to give away any spoilers, but it's pretty emotional and bittersweet, especially for a young child with a huge heart and love of dogs.
I will say that watching the bonus footage on the DVD/BluRay is highly worth the time. Most of the scenes were filmed in the extreme Canadian cold, which was a logistical nightmare for the filming crew and actors. Today, the same movie would be basically all green screen and CGI.
I still don't grok how they trained the dogs to "act" as well as they did. Absolutely phenomenal work from the trainers and dogs themselves.
Movie has Paul Walker saying dog FAMILY too many times for my little broken heart since his death. He was like FAMILY you could say, god rest his soul. Vin Deisle must tell you to go to