Let me be clear, this toy is a lifesaver. This is the second model we have bought and we couldnt say more great things about it. If your baby has tummy issues, this might also be your saving grace. The vibrations help our little guy tremendously. it's made naps and car rides so much more enjoyable for everyone. We are honestly considering humor a third one just to have in case, that's how much we rely on these toys now.We have the FP hedgehog and absolutely love it. The only real difference is the outer fabric and animal. Theyre both soft, just different kinds if that makes sense, the Walrus is a smoother fabric. Other than that it is essentially the same as the other soothing toy. You can have the vibrations going with or without music and can control the vibration strength and volume of the music. The animal cover is also machine washable which is perfect for all parents of babies who spit up.