With simple rhymes and colorful, highly detailed painting, the prize-winning Atlantic Online cartoonist creates a Where's Waldo?-type hit, setting animals free from Franklin Park Zoo and challenging children to find them in settings from Faneuil Hall to Fenway Park. In the city of Boston, / in fair Franklin Park, / sits a snug little zoo / that closes at dark. One morning the keeper / discovered a note. / We've gone for a walk/ the animals wrote...