This puppy has been awesome in helping soothe my little one to sleep. We started putting it on the floor outside of her crib when she was an infant and would turn it on before we left the room. We would sing to her and then the puppy would continue once we left...it hums songs like a real person, and it is very soothing and relaxing. When a child is old enough to have a stuffed animal in the crib, it even has vibrations to help soothe to sleep. We use it for bedtime, but I'm sure it would calm a fussy baby, too. Great product!