Vtech Pop & Sing Animal TrainExplore fidget features on the wheels to work little fingers and experiment with cause and effect Press, push, flip and twist the wheel switches to make the animals pop up; peek a boo! Crawlers can push the train to hear sounds and songs and watch as the light up smokestack flashes along to the music Toddlers can pull the train to hear melodies as it moves, rewarding little walkers and working gross motor skills; pull cord stores under the train