Absolutely adorable animation here. I liked the liberties you took with the dinosaurs, like adding plates to Rex's back. I always loved the way plates looked on different dinosaurs, I would often add them to dinosaurs I knew didn't have them.
The ending just seemed a little too violent compared to the rest of the animation, I'm sure that was probably the joke, but the Terminator 2 style ending just seemed a little heavy in comparison to the rest of the humor.
Also, was Paul supposed to be a Plateosaurus or some other kind of prosauropod, or was he just some fanciful creation? Either way, he was way too cute.