Chief getting his leg broken as they were chasing after Tod and it's Tod's fault? It got silly when Copper acted as if Chief was killed and it turned into the ultimate revenge. Chief was even faking pain so he could get spoiled and Amos Slade told the elderly dog to quit it. Even for a Children's film, it came off as Dexter's dad wanting revenge on Dee Dee "dying" during the car race on Dexter's Laboratory.
Truth be told, "The Fox and the Hound" isn't a very good Animated Disney film, it's from the less prestigious phase. The friendship was contrived and the relationship between Widow Tweed and Tod was far more affecting. The most memorable scene in the film is when the Widow leaves Tod in the Forest ("Goodbye May Seem Forever"). Jeanette Nolan was a marvelous voice actress and I wish the film had been about the bond between the Fox and his owner, the Widow, instead.