There is such depth here. Consider the wordplay. When Stillwater picks up his nephew, he says "Hi, Koo!" And then, of course, Koo only speaks in the 17-syllable haiku poetry form. The lovely and realistic watercolor renditions of people and pandas make the whole story seem dreamlike. Stillwater sometimes seems normal panda sized, sometimes as big as a house. The wordless -- and haunting -- image of Miss Whitaker, late at night, looking at a painting Karl and Koo made for her is worth the price of the book in itself.