Oh, i can awnser that one. Have you ever heard of the "rotorscoping" animation technique? It was used to film those Disney films, like Cinderella and Snow White:I'm still amazed at the lifelike animation of Snow White dancing with the seven dwarves in their little house, something you oddly don't see as much in today's (traditionally) animated movies).
Anyone still want to tell me it's all a coincidence? Peter and Rochelle Schweizer interviewed Disney animators and report that while working on the Lion King the animators held up stills from Kimba for comparison to their own work.
Kimba is one of the landmarks of animation. The Disney company has earned over 1.5 billion dollars from The Lion King but has not given either any sort of compensation to Tezuka Productions nor credit to Osamu Tezuka. I know their creative people know better. What went wrong?