Maggie and the Ferocious Beast (2000)

It's just rained and the Beast can't resist sliding through the puddles, making him the ferociously muddy beast! Maggie decides it's high time the Beast took a bath, so he starts sudsing up in the River of Dreams while Hamilton washes his spots out by hand. When the spots dry, however, they end up all wrinkly! The Beast can't wear wrinkly spots! Maggie comes up with the solution - they simply press the spots flat in a great big book.