DevelopmentAge 0-3 monthsEvidence-based

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What Are the Typical Baby Development Milestones at 3 Months?

Published February 16, 2026Updated February 16, 2026

Quick Answer

Three-month-old babies typically reach milestones in motor skills, communication, and social interaction. They begin to lift their heads, coo, and show interest in their surroundings.

Key Takeaways

  • Three-month-old babies typically reach milestones in motor skills, communication, and social interaction. They begin to lift their heads, coo, and show interest in their surroundings.
  • Evidence shows that by 3 months, babies can hold their head up at a 45-degree angle while lying on their stomach - according to the American Academy of Pediatrics (AAP).
  • The AAP recommends that parents encourage tummy time to help strengthen neck and shoulder muscles.
  • Studies indicate that infants around 3 months can recognize familiar faces and may smile in response - research published in child development journals.
  • According to CDC guidelines, babies at this age start to coo and make sounds to express themselves, which is crucial for language development.
  • WHO guidelines suggest engaging with infants through talking and singing to support their social and emotional development.
  • Research published in pediatric health journals shows that regular interaction with caregivers significantly boosts cognitive and emotional growth.

Quick Answer

Three-month-old babies typically reach milestones in motor skills, communication, and social interaction. They begin to lift their heads, coo, and show interest in their surroundings.

What You Need to Know

At three months, babies experience rapid growth and development. This period is marked by significant achievements in physical, social, and cognitive abilities. Parents and caregivers play a crucial role in supporting these milestones by providing a nurturing and stimulating environment.

Evidence-Based Guidelines

According to the American Academy of Pediatrics (AAP), by the end of the third month, babies should be able to lift their head and chest while lying on their stomach, indicating good neck strength. The AAP also emphasizes the importance of tummy time for developing these muscles.

The CDC outlines that infants at this age start to coo and make sounds, which are essential for early language development. Engaging with your baby through talking and singing is encouraged to foster these skills. WHO guidelines further suggest that parents should interact with their infants regularly to support social and emotional growth.

Research published in pediatric health journals indicates that infants who receive regular interaction from caregivers show accelerated cognitive and emotional development. Parents are encouraged to provide a safe and engaging environment that promotes exploration and learning.

Common Questions Parents Ask

Many parents have questions about their baby’s development at this stage. It’s normal to seek guidance and reassurance during this critical period. Regular check-ups with your pediatrician can help monitor your baby's growth and address any concerns.

Safety Considerations

While encouraging development, it’s important to ensure a safe environment. Always supervise tummy time and ensure that the baby is placed on a firm surface free from soft bedding or toys that may pose a suffocation risk. Following safe sleep practices is also crucial to prevent Sudden Infant Death Syndrome (SIDS).

When to Contact Your Pediatrician

If your baby is not meeting developmental milestones, such as failing to hold their head up or show any signs of communication by 3 months, it is essential to consult a healthcare provider. Early intervention can be beneficial for any developmental delays.

The Bottom Line

In summary, three-month-old infants typically achieve several key developmental milestones, including improved motor skills, social interaction, and early language abilities. Parents can support their baby's growth by providing a stimulating environment and regular interaction. Following guidelines from the CDC, AAP, and WHO can help ensure healthy development during this crucial time.

Frequently Asked Questions

What physical milestones should a 3-month-old reach?

At 3 months, babies should be able to lift their heads and chest when lying on their stomach, demonstrating increased neck strength. They may also start to push down on their legs when their feet are on a hard surface.

How can I support my baby's development at 3 months?

You can support your baby's development by providing tummy time, talking to them, and engaging in playful interactions. These activities stimulate motor skills, communication, and social bonding.

Is it normal for my 3-month-old to sleep a lot?

Yes, it is normal for 3-month-olds to sleep around 14 to 17 hours a day, including naps. Sleep is crucial for their growth and development.

When should I be concerned about my baby's development?

If your baby isn't meeting milestones, such as not lifting their head or not making any sounds, it's important to consult your pediatrician. They can assess development and rule out any concerns.

What should I do if my baby is not smiling by 3 months?

If your baby isn’t smiling by 3 months, it’s advisable to discuss this with your pediatrician. Social smiling is an important milestone, and early intervention can be beneficial.

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💡 Note: This content is curated from official health organization guidelines. For original source citations, see the "Sources" section above.

Evidence Sources

This insight is generated using RAG (Retrieval-Augmented Generation) from verified health guidelines.

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Medical Disclaimer

This content is educational and does not replace professional medical advice. Always consult your pediatrician for personal health concerns.

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