Hudson went to the production Erth: Dinosaur Petting Zoo where he got to pet a baby dinosaur, saw a 3' dragonfly fly through the crowd and eventually got up his nerve to touch the T. Rex on the tail.
All of the dinosaurs were the most ornate and lifelike puppets you've ever seen. The T. Rex even chased after a few volunteers from the crowd that had come up to feed and help the trainer. (You can see the actors legs in between the T. Rex legs.) Hudson thought it was cool, but the T. Rex was a little scary sometimes.