Peculiar pets

"What do you do if you really, really want a pet, and your mum keeps saying, 'We'll see'? You just have to use your imagination! What about a rock called Fluffy? A sweet wrapper called William? Or maybe a balloon called Bruce? Pets don't get more peculiar than this. There's even a real pet at the end as our heroine's patience is rewarded with ... Timmy the Kitten! And Timmy is the best pet in the world"--Publisher's description.