The Grumpy Little Girls and the Bouncy Ferret by Lindsay Camp
Watch Out! Here come the Grumpy Little Girls -- animal-mad Lulu, imaginative Maisie, tiny-buy-fierce Ruby, and big, bouncy Fiz. Each very different, all very grumpy! Lulu wants a ferret more than anything else in the world, but her mum and dad have said NO, anther pet would be too expensive. Lulu's feeling very grumpy until she comes up with the idea of trying to make some money with the help of some friends...AGE 3-6