I think it's a disney but i'm only about 40% sure. It's an older film, but coloured, about a dog and a bear. This guy had to leave his dog behind in the wild because he had to leave and the dog was no where to be found. The dog found bear and they became friends. The movie goes on about the 2 animals. I remember something about hibernation. I also remember something about the bear growning 1/2 his size during the winter. Near the end, the next summer or spring I think, the guy comes back. The dog reluctantly leaves the bear and goes off with the guy. I could be wrong about the plot but that's what i remember.

Any idea?
thanks

It is not animated.
Yeah, it's that nikki one, thanks so much