I know not every toy is supposed to be entertaining or stimulating, but this toy was a let-down. We initially bought the worm, thinking our son would like the large size, explore the different body sections, and react to the music. Unfortunately, the music when you squeeze the head is so soft, it took my husband and I a second to realize it was coming from the toy. After presenting it to our 5 month old, he lost interest in it very quickly and never wanted to play with it again. Now, it just sits in his room, neglected, and will be dontated to a charity very soon.