Courage the Cowardly Dog Season 4 Episode 13
Muriel gets a terrible cold, and after a while, she sees a talking slug that wants help. Following directions, Courage and Muriel go to a swamp where there are slugs that are ruled by a snake named Big Bayou. He sheds his skin and makes the slugs make statues out of them. They say Bayou has a magic book that will free them and cure Muriel. Courage gets the book and cures Muriel. Bayou then comes after him, and he bites the book, and his venom magically makes the snake-skin statues attack him. Muriel uses her nail-file to free the slugs.
Serie: Courage the Cowardly Dog
Episode Title: The Mask
Air Date: 2002-10-18