My baby can head up steadily without support, start tol roll over on her 4 months exactly - 13 April, she knew how to differentiate stranger and parents. She will lips up whever see the stranger. However, she likes to smile often, plus she has the chubby face, so those that had seen her before would like to cubit her face...
She lilke to watch my mouth intently when I speak and try to imitate inflections and utter consonant sounds such as "m" and "b."