Month 10 of 12 · Window 5 · Almost a toddler
Your 10-month-old baby: milestones and what to expect
Ten months is the pulling-up month for many: furniture becomes gym equipment and coffee-table height becomes the danger zone. Babbling starts sounding like sentences with the melody of real speech.
Checked against CDC, NHS and AAP guidance · how we fact-check
Most babies do these by 9 months (CDC)
Social & emotional: Is shy, clingy, or fearful around strangers · shows several facial expressions · reacts when you leave · smiles or laughs at peek-a-boo · lifts arms up to be picked up.
Language & communication: Looks when you call their name · makes sounds like "mamamama", "babababa".
Movement & thinking: Looks for objects dropped out of sight · bangs two things together · gets to sitting by themselves · moves things hand to hand · rakes food toward themselves · sits without support.
The next official CDC checklist is at 12 months — between checklists, babies work on these same skills at their own pace.
What you might notice
Fussy clusters were described around weeks 44 and 52, right as huge motor projects (standing! cruising!) take over. Many parents report clingier stretches near the first birthday. Games, waves, and first special words make up for everything.
What can help this month
Expect more falls and frustration as your baby pushes toward walking: narrate what you see instead of over-praising or stepping in constantly, so they build confidence trying things themselves. Keep the bedtime routine steady even if clinginess spikes around the birthday. And take a moment for yourself too: you got a whole small human through their first year.
And you: You got a whole small human through year one. When the clinginess flares near the birthday, it is a milestone in disguise, not a setback. Be as kind to yourself as you are to them.
Talk with your pediatrician if…
Your baby is missing one or more of the milestones above by 12 months, or has lost skills they once had. That is the CDC's own advice: don't wait, talk with the doctor and ask about developmental screening. And if you're simply worried, that's reason enough to call.
Week by week, if you want the detail
This month roughly covers week 40 · week 41 · week 42 · week 43. Each page has that week's specifics on your baby's calendar.
Want the personal version?
This page covers what's typical at 10 months in general. For your own baby's map — including adjusted age for premature babies — run the free forecast.
See my baby's exact forecastSources: CDC milestone checklists (2022 revision) · Zubler et al., Pediatrics 2022 · van de Rijt-Plooij & Plooij, 1992 (via KNAW review) · Sadurní & Rostan, 2002. Timing varies a lot between babies — windows, not deadlines.