A choo-choo at the zoo? Did you know it’s musical, too? Press down on the train whistle to hear it blow, so the Train Conductor can signal the polar bear and gorilla to climb into the back. Then press down on the train bed to hear a sing-along song! Kids can roll the train along to hear fun animal sounds to help bring the play to life. So get on board with all the musical fun! Requires two AA batteries (included). CMP36- Fisher-Price Little People Choo-Choo Zoo Train, push-along toy train with music and animal sounds for toddlers ages 1-5 years