I took grandchildren, ages 10 and 6. This was their first 3-D movie, and I am a huge fan of 3-D movies! From the beginning, the kids were laughing, reaching up to try to catch things in the "air." And from the beginning, the message was quite clear...save the earth. They both got it. A great message wrapped up in a fun way that held attention. There was just enough discomfort when the animals had to leave their home because the greedy humans were destroying the trees in order to make more and more money, to punch home the seriousness of the topic, but it did not linger on that aspect long enough to be depressing or worrisome for children. Loved the movie. The best Seuss movie so far, in my opinion.