This short is about a purple dinosaur named Sigmund, who likes to bounce on top of trees.
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Reviews
Good movie but grossly overrated
The film may be flawed, but its message is not.
Very good movie overall, highly recommended. Most of the negative reviews don't have any merit and are all pollitically based. Give this movie a chance at least, and it might give you a different perspective.
Blistering performances.
In a presentation of this short (you can find the video on YouTube) he says he is conscious that cavemen and dinosaurs didn't live in the same period, what he was interested in is the contrast between the giant figure of the dinosaur and the small caveman (contrast wonderfully represented in a particular scene you will certainly notice). Also, he tells that this has nothing to do with Barney, it was pure coincidence (Barney & Friends first episode: 1992). Really nice short, considering this was made while he was a student.