From the author and illustrator of the bestselling Peek-a Who? comes another irresistible board book that's sure to entertain curious babies and toddlers. With peek-a-boo windows featuring adorable baby animals, bright colors, and a simple, playful text, Grow Up! takes guessing games for toddlers to a new level! Honors for Grow Up! : 2004 CCBC (Cooperative Children's Book Center) Choices selection