How your child plays, learns, speaks, acts, and moves offers important clues about your child’s development. Developmental milestones are things most children (75% or more) can do by a certain age. Check the milestones your child has reached by the end of 4 months by completing the checklist below. Share it with your child’s doctor, teacher, and other providers, and be sure to talk about the milestones your child has reached and what to expect next.
If your child was born more than 3 weeks prematurely, use his/her corrected age. If your child’s age falls between 2 checklist ages, use the checklist for the younger age.
Checking children’s development regularly is important. CDC’s free Milestone Tracker app is also available to complete the checklists, with reminders and helpful tips on the go! Available on the AppStore and GooglePlay.
Milestones matter! Check the milestones your baby has reached by 4 months by completing the checklist below.
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CDC does not collect or share any personal information that can be used to identify you or your child.
What Most Babies Do by this Age:
Selected “not sure”? Watch for these milestones over the next week or two. Try some things with your child that gives him/her the chance to show the milestone. If you’re still not seeing the milestone, see the steps below.
Selected “not yet” or have other concerns or questions about your child’s development? Talk with your child’s doctor, teacher and/or another trusted provider. Share the checklist and any questions or concerns you might have. Ask about developmental screening. It’s recommended for all children. If you, the doctor, teacher, or other provider is still concerned after screening, ask to be connected with (1) a specialist who can learn more about your child AND (2) with services and other supports that may help. Visit www.cdc.gov/Concerned for more information.
Chuckles when you try to make him laugh
Looks at you, moves, or makes sounds to get or keep your attention
Makes sounds like “oooo”, “aahh” (cooing)
Makes sounds back when you talk to him
Turns head towards the sound of your voice
If hungry, opens mouth when he sees breast or bottle
Looks at her hands with interest
Holds head steady without support when you are holding him
Holds a toy when you put it in his hand
Uses his arm to swing at toys
Brings hands to mouth
Pushes up onto elbows/forearms when on tummy