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Your Child’s Development: 4 Months


Babies this age are learning how to interact with the world around them. To get your attention, your baby might cry, fuss, or squeal. To get a better view of the room, babies may use newfound strength to pull up on their arms while lying on the belly.

Doctors use certain milestones to tell if a baby is developing as expected. There's a wide range of what's considered normal, so some babies gain skills earlier or later than others. Babies who were born prematurely reach milestones later. Always talk with your doctor about your baby's progress.

Here are some things your baby might be doing:

Communication and Language Skills

Movement and Physical Development

Social and Emotional Development

Cognitive Skills (Thinking and Learning)

When to Talk to Your Doctor

As a parent, you are the best observer of your baby. Share your concerns — even little ones — with your baby's doctor. Always tell the doctor if your baby:

Also, if you ever notice that your baby has lost skills he or she once had or shows weakness on one side of the body, tell your doctor.

Date reviewed: June 2016


Note: All information on KidsHealth® is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

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