I haven't seen the Fox and the Hound in a long time but I do know that I love it because it is so sad and emotional. It made me cry It may be an older movie but it's still so sad...

EDIT: And is it just me or is everything sadder when it's portrayed with animals? Maybe it's just because I love animals so much that I think that, but if a movie with the same theme as the lion king was made, either animated or real life with people instead of lions, it wouldn't have had the same effect at all.