So yea, Disney's Mighty Joe Young, is a REMAKE! That's why it would happen to be Disney's Mighty Joe Young. Of course, being a remake it is not true to the original (which isn't horribly surprising, though disgusting).
After Walt Disney died the Disney corporation sold it's soul to the world, the New Age movement and thensome. Periodically they manage to produce pretty good quality films (that admittedly I do enjoy, even have a couple favorites), but there are still things even in those that aren't great either. Walt had class, imagination, heart and much more. He did his movies accurate to the stories he took them from, or created good, wholesome movies. Perhaps in this day and age of over the top, instant gratification and sex!sex!sex! the principles of wholesomeness have been degraded as well.
As for remaking an original film...there's an excess of that going on in Hollywood today. Here's a list of movies off the top of my head that are all remakes: Gone in Sixty Seconds, The Fast and the Furious, the Bourne Identity, Cheaper by the Dozen, Yours, Mine and Ours, The Haunting, Alfie, The Truth About Charlie (taken from Audrey Hepburn and Carey Grant's Charade nonetheless!), The Lion, The Witch and The Wardrobe (btw the original BBC films of the Narnia Chronicles are no less than 95% accurate and practically verbatim to the books they only lacked in the technological advantages we now have, and still they do a good job there too). There are a lot of other films that have come out over the past few years that have all been remakes that I can't spout off the top of my head and it speaks volumes on the condition of originality in the movie industry. *sigh* We all have our things to be hypercritical and sensitive of, this just so happens to be one of mine. If I could I would put a stop to all the things about movie making these days that boil my blood, especially when movies are made from books!