4 to 6 Months Milestone Development
~He/She smile often. He/She even laugh, gurgling and imitate sounds.
~He/She learn about thier body, exploring my hands and feet.
~He/She can sit up when you prop them up.
~He/She like to roll over, scoot and bounce.
~He/She can grasp things without using thier thumb, and like to put things in thier month. This is how they learn.