No animal - or animal-shaped problem - is too big or small for Lexi and Lily, known as 'Muddy Paws,' the animal experts. They are cousins and best friends, and while they don't always see eye to eye ... but they are united by their love for all animals.

In this story, the girls are charged with looking after two adorable rare breed Gloucester Old Spot piglets who like to be entertained in a very special way. But this story isn't only about rock-music-loving piglets, there's plenty of other fun-loving animals who keep Muddy Paws on their toes.