With a tiger at the wheel, the big purple bus rolls all over town, picking up a menagerie of passengers from sheep (“BAAAH, BAAAH, BAAAH”) to vipers—get it? — (“HISS, HISS, HISS”) to skunks (“SSSS, SSSS, SSSS”) before disgorging its dismayed human riders (“HELP! HELP! HELP!”) at an outdoor party. Though wild creatures waddle, tramp, or slither aboard by troops there's always room for more in Karas’s (Raising Sweetness, 1999, etc.) gleeful paint-and-paper collage scenes. The scene on the bus is bound to provoke a great reaction and reading (or honking) along is inevitable. It's a frolicsome spin on the familiar play rhyme, and a surefire alternative or follow-up to Maryann Kovalski's Wheels on the Bus (1987) or Paul Zelinsky's classic popup version (1990). Hop onboard. (Picture book. 5-7)