Have you seen my invisible dinosaur?

"Help! This little girl has lost her best friend. He's a dinosaur (not the extinct kind). He's enormous (bigger than a panda!). He was last seen before she gave him a bath and washed off all the mud (maybe that wasn't a good idea?). She's tried to lure him with snacks and put up Lost Dinosaur posters, but nothing has helped. If only it weren't such a clear day--if only it were raining, or snowing, or the leaves were falling, or something. Would it help if she drew a picture? With delicate visual sleights of hand and an underlying sweetness, author-illustrator Helen Yoon invites us to see through a child's eyes"--Provided by the publisher.