My family and I LOVED this movie!!! I don't know if I would take a very young child but my 7 year old daughter said "That was awesome!" as we walked out of the theater.
I took my 6 y/o daughter to see this yesterday afternoon. It was awesome! The scenes were incredible! We saw a preview for "Oceans", the next film from Disnenature and it looks like it will be just as good as "Earth".