Patricelli’s trademark one-haired imp gets into and out of trouble, grinning all the while. On the left-hand page, Baby scrawls on wall (and dog): “No, no;” on the right-hand page, the artistic efforts confine themselves to paper: “Yes, yes,” and so on. Dark outlines against vivid backgrounds make Baby’s antics pop off the page. The monosyllabic two-word text—so familiar to babies—milks each situation for all its worth. A solid companion to the author/illustrator’s other baby books.