Playing with the popular game "Peekaboo," readers help Peek search for Boo as the small guinea pig gets up to all sorts of hi-jinx around the zoo.Peek is ready for a fun day at the zoo, but can't find her best friend Boo anywhere! Where is he hiding? Maybe the elephants have seen him? Maybe he's watching the seals play? Help Peek search for the small guinea pig as he has silly fun around the zoo. Can you find him before the day is over?