There is not much I remember about the movie, since I've seen it as a kid (15-20 years ago). I've seen it in a cinema, so it couldn't have been a TV series. It was about a boy and a dog. At the beginning of the movie, the boy was in a forest (near a lake?) and was attacked by a bear. The dog either protected the boy or just barked at it allowing the boy to climb a nearby tree. I think some time later the boy was still sitting on the tree and it started raining hard.
The only other scene the I remember from the movie involved the boy and his family moving far away and leaving the dog behind. I think the dog actually followed them and a big part of the movie was about the the dog trying to reach his master (the boy). I vaguely remember that at the end of the movie the dog tired and dirty reached the boy and his family.
Does anyone know what movie is this? Hopefully I'm not combining scenes from different movies here.