Precious Potter. The Heaviest Cat in the World Precious Potter grows up to be such a big cat, his mother can't afford to feed him. It's time Precious Potter got a job - but will he be able to find one? Sleepy Sammy. The Sleepiest Sloth in the World Sammy the sloth does nothing but dream all day and sleep all night. Will anything wake him up? Funny lively stories, the perfect books for building reader confidence. The pages are attractively designed with clear, easy-to-read type and fun colour illustrations throughout. They include joke sections and come in a large, child-friendly format.