Baby Behavior: Is This Normal?

Month 6, Week 3

Babies have some unusual habits, which help them learn about the world around them.

Here's how:

  • The nerves in babies' mouths are much better developed than their fingertips, so placing anything -- and everything -- into the mouth can provide babies with more information than holding something.
  • Babies may suck on their thumbs, fingers and even their toes to soothe themselves, especially when they're hungry or tired.

But if you're stumped by something your baby is doing, or if you have concerns, feel free to call your pediatrician's office. They may be able to put your mind at ease and can help you know if your child needs to come in.

Your Baby's Development This Week

Your baby is beginning to understand that you're a permanent fixture in their life. Previously, when you walked away, they thought that you disappeared, and it was exciting and unexpected when you returned.

But now they are realizing that people and objects continue to exist when they're out of their line of sight, which is called object permanence.

You can help reinforce the point by:

  • Playing peek-a-boo: When you reappear after covering up your face, your baby may be surprised at first, but they'll come to expect your return.
  • Hiding toys under blankets: In the past, when your baby couldn't see their favorite toy anymore, they didn't bother looking for it. Now, they'll try pulling off the blanket to find it, especially if part of the toy is sticking out.
  • Using objects consistently: They'll realize that the pacifier they woke up with is the same one they fell asleep with.

Month 6, Week 3 Tips

  • Some babies bang their heads or rock their bodies. It's normal, provided they aren't hurting themselves or doing it for hours at a time.
  • Don't get uptight if your baby reaches for their genitals during baths; it's normal for them to be curious and explore their body.
  • Bought a new car seat? Check the National Highway Traffic Safety Administration's web site to find out where they can be installed by experts in your area. Remember that Infants at this age should always ride in a rear-facing car seat. Your pediatrician may be able to help with correctly positioning your baby in the car seat.
  • Don’t count on breastfeeding as your only form of birth control. Ask your doctor about other options.
  • Some babies sweat in their sleep. That's normal, but make sure yours isn't dressed too warmly, since overheating is a risk factor for SIDS.
  • If your baby was born prematurely, your doctor may tell you to subtract the number of weeks they arrived early from their true age and use the adjusted number for developmental milestones.
  • Your baby will soon start crawling. Put gates up near stairs and in doorways. Put safeguards on corners of furniture so your baby won’t hurt their head. Pay attention to dangling cords, such as from window blinds, or electrical cords. Move these cords up high and out of reach.


WebMD Medical Reference Reviewed by Dan Brennan, MD on July 25, 2019



American Academy of Pediatrics: "Breastfeeding as a Form of Contraception." "Cognitive Development: 4 to 7 Months." "Developmental Milestones: 7 Months." "Preemie Milestones." "Safety for Your Child: 6 to 12 Months." "Sweating During Sleep (Audio)."

WebMD: "Baby's First Year."

Mayo Clinic: "Pacifiers: Are They Good for Your Baby?"

Nemours Foundation: "Car Seat Safety."



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