Your baby is growing by leaps and bounds. Even after just a few months, he or she is doing enough amazing things to keep you glued behind the video camera.

But is your baby hitting developmental milestones ahead or behind of his or her peers? Should you be concerned? We’ve listed some of the common developmental red flags, by age, you should be aware of. According to the Centers for Disease Control and Prevention, contact your child’s doctor or nurse if you see these signs of possible developmental delay, especially if you see your child regress in skills or development.

It is important to remember that this is not a definitive list, and babies develop at their own pace. If your child has not reached a particular milestone — emotionalphysical, or cognitive — there may be nothing to be concerned about, but it’s a good idea to check with a professional.


Age 5-7 months
Your baby may be able to:You may want to talk to a healthcare professional if your baby:
Demonstrate curiosity about things and try to grab things out of reachDoesn’t reach for things
Know familiar facesShows no affection to caregivers
Enjoy playing with others, especially parentsWill not play with others
Respond to other people’s emotions and often seem happyShows no emotion (i.e., doesn’t laugh or squeal)
Respond to sounds by making soundsDoesn’t respond to sounds
Bring things to mouthHas trouble bringing things to mouth
String vowels together when babbling (ah, eh, oh), begin to say consonants (m and b)Doesn’t make vowel or consonant sounds
Roll over in one or both directionsDoesn’t roll over in either direction

Reviewed by Dr. Sara Connolly, August 2019

Does this answer your question? If not, Ask Bundoo.


  1. Centers for Disease Control and Prevention. Developmental Milestones Checklist.
  2. National Institutes of Health. Developmental Milestone Records – 6 months.
  3. Centers for Disease Control and Prevention. Important Milestones: Your Baby By Six Months.


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