The World of Eric Carle Developmental Penguin Interactive toy features printed fabrics based on original Eric Carle art Pull string fish vibrates and retracts when pulled Developmental features include jiggle motion and retracting fish, jingle bell rattle, squeak and crinkle sounds, as well as textured teether feet Exclusive Very Hungry Caterpillar clip for easy attachment to the crib, carrier, or stroller Promotes tactile exploration, auditory and visual development