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

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.