S1, E102: Harry is reluctant to have a bath so he goes to Dino-World where he endeavours to become as dirty and stinky as he possibly can. He becomes so repulsively filthy that even the dinosaurs don't want to play with him and he is even crowned King of the Swamp. However, when faced with losing his hair as a result of his uncleanness, Harry decides a bath would actually be quite nice after all!/ Harry's friend Charlie brings her new kitten (Buster) to visit Harry. Buster follows the terrified dinosaurs into Dino-World where there ensues a safari-style mission to catch Buster and bring him safely back home.