Cat & Louse is the thirty-fifth episode of Quack Pack.
When the group interviews a cat and lion trainer, Huey's fear of house cats resurfaces. Dewey and Louie plan to discover how his fear first came about and learn it may be connected to the trainer. When the trainer discovers the group has found out he is not only training his cats to do harmless tricks, he sets out for revenge.
- The title is a pun on the idiom "cat and mouse".