I'm not Sydney!
(Book)

"Hanging upside down in a tree, Sydney imagines he is a sleepy, sun-bathing sloth. And that's where Sami finds him. Sami thinks sloths are too slow, so she scampers up the tree and becomes a spider monkey. 'Fast is fun!' she chatters. 'Fast is best!' And that’s where Edward finds them… One after another, the neighborhood kids wander by and slip into a shared imaginative world where leaves and giant flowers unfurl, playing, laughing, teasing and bickering, until Edward the elephant fills up his trunk and—WHOOSH!—sends the children 'galloping home like a herd of small wet animals.'" --publisher's website