Your Baby at 4 Months

What Most Babies Do at this Age:


  • Smiles spontaneously, especially at people
  • Likes to play with people and might cry when playing stops
  • Copies some movements and facial expressions, like smiling or frowning


  • Begins to babble
  • Babbles with expression and copies sounds he/she hears
  • Cries in different ways to show hunger, pain or being tired

Cognitive (learning, thinking, problem-solving)

  • Lets you know if he/she is happy or sad
  • Responds to affection
  • Reaches for toy with one hand
  • Uses hands and eyes together, such as seeing a toy and reaching for it
  • Follows moving things with eyes from side to side
  • Watches faces closely
  • Recognizes familiar people and things at a distance

Movement/Physical Development

  • Holds head steady, unsupported
  • Pushes down on legs when feet are on a hard surface
  • May be able to roll over from tummy to back
  • Can hold a toy and shake it and swing at dangling toys
  • Brings hands to mouth
  • When lying on stomach, pushes up to elbows

The Milestone Child Development Chart is shown Courtesy of the Centers for Disease Control (CDC)

What You Can Do for Your Four-Month-Old:

  • Hold and talk to your baby; smile and be cheerful while you do.
  • Set steady routines for sleeping and feeding.
  • Pay close attention to what your baby likes and doesn’t like; you will know how best to meet his/her needs and what you can do to make your baby happy.
  • Copy your baby’s sounds.
  • Act excited and smile when your baby makes sounds.
  • Have quiet play times when you read or sing to your baby.
  • Give age-appropriate toys to play with, such as rattles or colorful pictures.
  • Play games such as peek-a-boo.
  • Provide safe opportunities for your baby to reach for toys and explore his/her surroundings.
  • Put toys near your baby so that he/she can reach for them or kick his/her feet.
  • Put toys or rattles in your baby’s hand and help him/her to hold them.
  • Hold your baby upright with feet on the floor, and sing or talk to your baby as he/she “stands” with support.