A dog, a parrot, a mouse, and lots of cats. What could go wrong? Upset over a lack of attention from his humans, Carl the Cat sets out with his friends to confront the source of his agitation... Marvin the Mouse. Carl Goes to Mouse World follows the adventures of Carl and his animal buddies as they learn about the value of friendship and ultimately, acceptance. This is an adventure for all ages. A great book about friendship and overcoming differences.