The first days of a child will be a blur of feeding, changing diapers, settling her to sleep and responding to her wails. In a matter of weeks, she will start to take notice of your voice, face, and touch. You will also begin to notice more things about her, like black and white patterns draw her attention. Her hearing also becomes developed, and she turns to familiar sounds. At 4 months old, your baby will like to play. She tends to become dexterous and start to do more with her hands like moving of toys and shaking of rattles.