9 Months Milestones

Every baby develops at their own pace, and there is a wide range of normal. At 9 months, your baby is going through enormous changes - learning to move, communicate, and understand the world. Some babies are early movers but late talkers, or vice versa. What matters most is that your baby is making steady progress over time, not that they hit every milestone on a specific date. If something feels off to you as a parent, trust your instincts and talk to your pediatrician. You know your baby best, and asking questions is always the right thing to do.

Crawling

CDC WHO

Your baby moves across the floor on hands and knees, or scoots on their bottom or belly. Any style of getting around counts.

What it looks like

Baby gets up on hands and knees and rocks, then starts moving forward or backward. Some babies army-crawl on their belly or scoot on their bottom instead - all of these are normal.

Typical range

6 moavg 8 mo10 mo12 mo

When should I worry?

This is normal

Lots of babies are still figuring out crawling at 9 months. Some skip it entirely and go straight to pulling up or cruising - that is completely fine.

Mention at next visit

If your baby is not moving around in any way by 10-11 months - not crawling, scooting, rolling, or creeping - mention it at your next well-child visit.

Call your doctor

If your baby seems stiff or floppy in their legs, only uses one side of their body, or has lost movement skills they used to have, call your pediatrician.

Related:not crawling not moving

Sitting Without Support

CDC WHO

Your baby can sit on their own without needing to prop themselves up with their hands or lean against something.

What it looks like

Baby sits steadily on the floor and can reach for toys or look around without toppling over. They may still fall sometimes, but they can sit for a minute or more on their own.

Typical range

5 moavg 7 mo9 mo10 mo

When should I worry?

This is normal

Most babies sit well without support by 9 months. Some wobbliness is still normal, especially when they reach for something.

Mention at next visit

If your baby still cannot sit without support by 9 months, let your pediatrician know at the next visit.

Call your doctor

If your baby has lost the ability to sit up after previously being able to, or seems to slump or fall to one side consistently, call your doctor.

Related:not sitting low muscle tone

Pulling to Stand (Emerging)

CDC

Your baby grabs onto furniture or your hands and pulls themselves up to a standing position.

What it looks like

Baby reaches up to a couch, coffee table, or your leg and pulls themselves from sitting to standing. They may be wobbly and hold on tightly. Some babies are just starting to try this at 9 months.

Typical range

7 moavg 9 mo11 mo13 mo

When should I worry?

This is normal

Some babies pull to stand by 9 months, but many are not doing this yet. It is very common for this to develop over the next couple of months.

Mention at next visit

If your baby shows no interest in pulling up by 12 months, bring it up at their next checkup.

Call your doctor

If your baby cannot bear any weight on their legs when you hold them in a standing position, or their legs seem very stiff or very floppy, call your pediatrician.

When to Talk to Your Doctor

Red flags to watch for

If you notice any of the following, contact your pediatrician. These signs do not necessarily mean something is wrong, but they are worth discussing with a professional.

Does not bear weight on legs when held in standing position
What to do
Mention to your pediatrician at the next visit.
Does not sit with help or support
What to do
Call your pediatrician to discuss.
Does not babble - no "mama," "baba," "dada" sounds
What to do
Call your pediatrician. A hearing evaluation may be recommended.
Does not respond to own name in a quiet setting
What to do
Bring this up with your pediatrician. It is worth checking hearing and development.
Does not recognize familiar people or seem to know caregivers
What to do
Call your pediatrician to discuss.
Does not look where you point or follow your gaze
What to do
Mention to your pediatrician at the next visit.
Has lost skills they once had (rolling, sitting, babbling)
What to do
Call your pediatrician right away. Loss of skills always warrants prompt evaluation.