9-Month-Old Baby: Developmental Milestones and Guidelines (2024)

Overview

Baby is on the move! Whether crawling, cruising, or even walking a little, your baby has started to interact with their environment.

Whether this means flipping through baby books, imitating simple play, or showing a strong reaction after eating a new food, it’s easier than ever to tell what baby thinks about what they’re experiencing.

While every child develops at a different pace, here are the progress points you should note in order to update your pediatrician about your baby’s growth.

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Movement

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The two most important things to look out for at 9 months are a surge in physical independence and an urge to explore.

In this sense, a little frustration is normal. A baby who can’t walk quite yet but is crawling and cruising usually gets frustrated when they can’t do everything they want. That said, don’t be surprised if baby gets sad when you leave. They’re not ready to give up their personal ride share service just yet. Mobility milestones at 9 months include:

  • sitting without support
  • creeping or crawling
  • using both hands to explore toys
  • turning head to visually track objects
  • more control while rolling or sitting
  • starting to pull to stand
  • enjoying bouncing up and down or rocking back and forth
  • trying to lean toward, reach for, and pick up toys

Sensory

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This is such a vital stage for sensory development. Your baby is all about exploration of the world around them, and for the first time they have the physical mobility to do it! The sensory behaviors you’re looking for include:

  • exploring and examining an object using both hands and mouth
  • turning several pages of a chunky board book at once
  • experimenting with the amount of force needed to pick up different objects
  • focusing on objects near and far
  • investigating shapes, sizes, and textures
  • observing environment from a variety of positions

Emotional and cognitive

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A new development in baby’s short life: Cognition is more easily tracked by verbal communication now.

When you ask and gesture to baby to turn off the light, do they reach for the switch? When you say Grandma called, do they seem to recognize the name? Whether or not your baby is speaking beyond a babble yet, you should feel like you’re communicating with them better than ever. The behaviors you’re looking for include:

  • using increased variety of sounds and syllable combinations in babbling
  • looking at familiar objects and people when named
  • recognizing their name
  • beginning to use hand movements to communicate wants and needs
  • follows some routine commands when paired with gestures
  • distinguishing between familiar and unfamiliar voices
  • shows recognition of commonly used words
  • mimics facial expressions and gestures

What to ask your doctor

Your pediatrician should be a valuable resource for you as well as your baby. You should never be afraid to switch doctors or get a second opinion, even if you’ve been going to the same one since baby was born.

As baby gets older, your questions will only become more varied and personal, so give yourself the gut check: Is this the doctor I want traveling with my child past the baby stage?

If you do have that essential trust established, some good questions at this stage include the following:

  • What isn’t safe for baby to be around and what needs to be stored?
  • How much baby-proofing is necessary to both encourage exploration andprotect baby?
  • Can you do the weighing at the end of the appointment? My baby doesn’t like the scale.
  • How do I get my baby to eat this vegetable, meat, or fruit if they don’t like it?
  • What should I look out for in their development in the next few months?
  • Are there any voluntary immunizations I should consider for my child?

When to call your doctor

If by 9 months your baby is struggling to express themselves vocally or to make any independent movement, you should make an appointment with your pediatrician right away. Here are additional red flags to bear in mind as you care for baby:

  • doesn’t reach for objects or put objects in their mouth
  • doesn’t seem to recognize familiar people
  • doesn’t play games involving back and forth
  • doesn’t sit with help
  • doesn’t respond to their own name

What you can do to support baby

The last few months before your baby turns 1 are months of transition. Your baby is learning the building blocks to be independent emotionally, physically, and cognitively.

It can be tempting to push your child toward these milestones, but one of the biggest ways you can help your baby grow is to provide a stable, supportive environment. After all, it’s so much more fun to take the leap into something new when we absolutely know our parents are there to catch us if we fall.

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9-Month-Old Baby: Developmental Milestones and Guidelines (2024)

FAQs

9-Month-Old Baby: Developmental Milestones and Guidelines? ›

At nine months, babies are also becoming experts at quickly changing position. They can push up to a crawl position, sit back down, and pivot to pick up a toy. Your little one may even be able to pull to a stand, and may soon start cruising around the room while holding onto furniture.

What is developmentally appropriate for a 9 month old? ›

At nine months, babies are also becoming experts at quickly changing position. They can push up to a crawl position, sit back down, and pivot to pick up a toy. Your little one may even be able to pull to a stand, and may soon start cruising around the room while holding onto furniture.

What is a 9 month old baby supposed to be doing? ›

By this age, most babies can roll over in both directions even in their sleep. Most babies also can sit on their own, while others need a little support. You might notice your baby beginning to scoot, rock back and forth, or even crawl across the room. Some babies this age can pull themselves to a standing position.

What are the red flags for 9 month old babies? ›

9-Month-Old Developmental Red Flags

Can't sit without assistance. Won't respond to own name. Doesn't babble. Doesn't look where you're pointing.

How many words should a 9 month old say? ›

Baby development at 9-10 months: what's happening

Your baby might even say 'dada' or 'mama' and know what these words mean. If your baby is an early talker, they might be using 1-2 words already. But your baby will still make noises to get your attention.

What cognitive skills should a 9 month old have? ›

Thinking - Cognitive Development
  • Watches an object as it falls.
  • Looks for objects hidden while watching.
  • Transfers things smoothly from hand to hand.
  • Plays peek-a-boo.
  • Uses thumb and index finger to pick things up, such as cereal o's.
  • Turns pages in a book.
  • Puts things in mouth.

What social skills should a 9 month old have? ›

Social/Emotional Milestones
  • Is shy, clingy, or fearful around strangers. ...
  • Shows several facial expressions, like happy, sad, angry, and surprised.
  • Looks when you call her name. ...
  • Reacts when you leave (looks, reaches for you, or cries) ...
  • Smiles or laughs when you play peek-a-boo.

What are red flags in child development? ›

Months Is not gazing at objects; does not tune out repetitive sounds; does not move eyes to follow sound Does not respond to loud sounds Does not coo or make sounds When lying on back: keeps hands fisted and lacks arm movements; is not bringing hands to mouth; lacks symmetrical arm movements; does not turn head to ...

How many teeth should a 9 month old have? ›

Between the ages of 8 months and 13 months, your baby might have a total of six temporary teeth, with four at the middle top and two at the bottom. At 13 to 19 months of age, it's typical for a baby to have a whopping 12 baby teeth.

What should a 9 month old know academically? ›

Language and communication milestones at 9 months
  • Pointing at things with their fingers.
  • Understands the word "no" and makes lots of different sounds.
  • Starts to copy movements they see and sounds they hear.

Are there signs of autism at 9 months? ›

Early signs of autism in babies (6 months to one year) may include: Reacting in an unexpected way to new faces. Rarely smiling in social situations. Making little or no eye contact.

What are delayed motor skills in a 9 month old? ›

These skills are typically acquired at earlier ages, and their absence at these ages signifies delay: 9-month visit: The infant should roll to both sides, sit well without support, and demonstrate motor symmetry without established handedness. He or she should be grasping and transferring objects hand to hand.

What is the 9 month baby crisis? ›

The American Academy of Pediatrics (AAP) cautions that babies this age are often developing strong separation anxiety because they are beginning to understand object permanence — if you're out of sight, they're still aware you exist — and may be unhappy they can't see you.

What age do babies clap their hands? ›

Most babies are able to clap around 9 months, after they've mastered sitting up, pushing and pulling themselves up with their hands, and pre-crawling. (All that upper body strength helps them have the coordination to clap, too.) At first, your baby will clap to mimic your movements.

What should I be doing with my 9-month-old? ›

Here are some things to do with your 9-month-old to promote their healthy growth and development at this stage: Spend time on the floor playing with your baby. If your baby is already crawling, one fun idea is to create an obstacle course with pillows, boxes, and cushions for them to crawl over and between.

What is the normal weight for a 9-month-old baby? ›

Baby weight chart by age
Baby ageFemale 50th percentile weightMale 50th percentile weight
7 months16 lb 14 oz (7.6 kg)18 lb 5 oz (8.3 kg)
8 months17 lb 8 oz (7.9 kg)18 lb 15 oz (8.6 kg)
9 months18 lb 2 oz (8.2 kg)19 lb 10 oz (8.9 kg)
10 months18 lb 11 oz (8.5 kg)20 lb 3 oz (9.2 kg)
9 more rows

How should my 9-month old be playing? ›

Play simple games like “peek-a-boo”, “this little piggy”, and “round and round the garden.” As your baby becomes more active provide toys that help develop their movement skills e.g. a cardboard box to crawl through, sand and water play, a push along wagon and pull–along toys.

How many teeth should a 9-month old have? ›

Between the ages of 8 months and 13 months, your baby might have a total of six temporary teeth, with four at the middle top and two at the bottom. At 13 to 19 months of age, it's typical for a baby to have a whopping 12 baby teeth.

Is my 9-month old autistic? ›

Early signs of autism in babies (6 months to one year) may include: Reacting in an unexpected way to new faces. Rarely smiling in social situations. Making little or no eye contact.

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