Related milestonesMakes different kinds of sounds to express feelingsBy 6 MonthsNot StartedReacts to sudden noises or soundsBy 6 MonthsNot StartedListens and responds when spoken toBy 6 MonthsNot StartedLooks at people and objectsBy 6 MonthsNot StartedBegins to giggle or laughBy 6 MonthsNot Started
