Four-Month-Old Developmental Milestones

For babies, muscle control development starts at the neck and moves down the body over time. Babies develop at different rates, but by the end of her fourth month, you can expect that your baby will probably be:

• Rolling from her stomach to her back, or vice versa
• Bringing her hands together

Other developmental milestones include:

• Laughing out loud
• Looking for the source of sounds
• Reacting to her surroundings