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4 Month Old Milestones & Development
4 Month Old Milestones & Development (Canada)
The developmental milestones many babies reach around 4 month old — across motor, language, social and thinking skills. A guide, not a checklist.
Milestones around 4 month old
- Laughs out loud
- Holds head steady, unsupported
- Pushes up on elbows
- Brings hands to mouth
How to support development at 4 month old
Talk, sing and read to your baby, give plenty of supervised floor and tummy time, and offer simple toys that match this stage. Responsive, everyday interaction is what helps most.
Play & learning: sensory toys, play mats & gyms, stacking toys, baby books & tummy-time gear. See sleep needs at this age on our sleep schedule page.
Frequently asked questions
What should a 4 month old be doing?
Around this age, many babies laughs out loud and holds head steady, unsupported. Ranges are wide and normal.
What toys are good for a 4 month old?
Simple, open-ended toys that match their stage — sensory toys, soft books, stacking and grasping toys.
General developmental information only, not medical advice. Every baby develops at their own pace and reaching milestones a little earlier or later is usually normal. If you have any concerns, speak with your healthcare provider.
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