I would disagree. While I loved the movie I would call it mixed (barely), but not adult. If the presence of death makes a film adult, then others would qualify as well, such as Bambi or The Last Unicorn. I'd just say they're for more intelligent and / or mature children, not necessarily adult.
Well the secret of Nimh is pretty much way more adult than most animated movies...I agree though, i'd say maybe 14/15 y/o. Still a good entry in the genre with a "kind-of" adult treatment, can't hurt ^^
Thank you for showing me this.
I took half a minute digesting the snippet on IMDB, a few minutes to download the movie, ten minutes to watch the beginning, then ordered it from the first store I found that sold it, despite the price being almost twice what I usually pay for movies. The price on Amazon UK (£5.45) is about a fifth of what I paid, I don't care though.
You're welcome, glad you discovered it and hope you'll like it as well ;)