The Attachable Activity Caterpillar with Music and Sound includes: Adjustable straps for attachment to crib rail, stroller or carrier, Ribbon tags for tactile exploration, Dimensional antennae with "Crinkle!" sound, Ring with sliding beads for "cause and effect" play, Spinning ball with beads makes a stimulating sound when spun Eric Carle is acclaimed and beloved as the creator of brilliantly illustrated and innovatively designed picture books for very young children. His best-known work, The Very Hungry Caterpillar, has eaten its way into the hearts of literally millions of children all over the world and has been translated into more than 47 languages and sold over 29 million copies. Since the Caterpillar was published in 1969, Eric Carle has illustrated more than seventy books, many best sellers, most of which he also wrote, and more than 88 million copies of his books have sold around the world.