A baby reaching and grasping wooden hanging toys on a play gym, exploring hand-eye coordination and early motor development.

3-Month-Old Baby: Development and Milestones

Last updated: March 11, 2026

At three months, daily life with your baby may start to feel a little more interactive. Your baby might spend time on a play mat, enjoy short moments of tummy time, relax in a bouncer or swing, and happily listen while you chat with them.
Even when things seem quiet, a lot is happening. At this age, babies are constantly learning — watching your face, listening to your voice, and slowly figuring out how their bodies move.
Before you know it, those small changes begin to turn into new milestones. Some are subtle, others more noticeable, but together they show just how quickly your little one is growing.
Below are some common developmental milestones many babies begin to show around three months of age.

Movement Milestones

At this stage, babies are gradually gaining strength and control over their bodies. Many of their movements are still wobbly, but you may notice more purpose behind them.
  • Raises head and chest during tummy time When lying on their stomach, many babies can lift their head and sometimes their chest for short moments. This helps strengthen neck and shoulder muscles.
  • Supports upper body with arms while on the tummy Some babies begin pushing up on their forearms during tummy time. This small "mini push-up" is an early step toward rolling and crawling later.
  • Stretches and kicks legs when lying down Whether on their back or tummy, babies often kick and stretch their legs energetically. These movements help build coordination and muscle strength.
  • Opens and closes hands Their tiny fists may start to loosen more often. You might see them slowly opening and closing their hands as they explore movement.
  • Pushes down with legs on a firm surface If you hold your baby upright with their feet touching a firm surface, they may try to press down with their legs.
  • Brings hands to mouth Hands often become fascinating objects. Babies frequently bring them to their mouths as part of early sensory exploration.
  • Swipes at dangling toys You may notice your baby batting at toys above a play gym. These swipes may not always connect yet, but the intention is beginning.
  • Grasps and shakes small hand toys Some babies can briefly grasp lightweight toys placed in their hands and may even give them a little shake.

Visual and Hearing Milestones

Your baby's senses are becoming sharper, and they're beginning to connect what they see with what they hear.
  • Watches faces closely Babies at this age are often fascinated by faces, especially yours. They may stare intently while you talk or smile.
  • Follows moving objects with their eyes When a toy moves slowly across their field of vision, many babies can track it with their eyes.
  • Recognizes familiar people and objects at a distance You may notice your baby reacting when they see a familiar face or favorite toy across the room.
  • Starts coordinating hands and eyes As vision improves, babies begin reaching toward things they see, even if their aim isn't perfect yet.
  • Smiles when hearing your voice Your voice is comforting and recognizable. Many babies respond with a smile when they hear it.
  • Begins to babble Soft coos and vowel-like sounds often appear around this age. Babies enjoy experimenting with their voices.
  • Attempts to imitate some sounds If you repeat sounds back and forth, your baby may try to mimic them in their own way.
  • Turns head toward sounds Babies may start turning their head when they hear a noise, especially familiar voices.

Social and Emotional Milestones

Three months is often when babies begin to show more personality and social engagement.
  • Develops a social smile Around this age, smiles are often more intentional. Your baby may smile directly at you during interaction.
  • Enjoys playing with people Many babies love simple interactions like talking, singing, or gentle games. When play stops, they may show disappointment.
  • Becomes more expressive Babies start using their whole body — facial expressions, movements, and sounds — to communicate feelings.
  • Imitates simple expressions or movements Some babies begin copying things like sticking out their tongue, smiling, or opening their mouth.

When to Check In With Your Pediatrician

Every baby develops at their own pace, and small variations are very common. However, certain signs around three months may be worth discussing with a pediatrician if they persist.
You may want to seek advice if your baby:
  • Doesn't seem to respond to loud sounds
  • Has difficulty supporting their head
  • Doesn't follow moving objects with their eyes
  • Rarely smiles at people
  • Doesn't grasp or hold objects
  • Doesn't attempt to reach for toys
  • Doesn't babble or make vocal sounds
  • Has noticeable difficulty moving one or both eyes
These signs don't automatically mean there is a problem, but a healthcare professional can help determine whether further evaluation is needed.

Additional Questions Parents Often Ask

Some babies start reaching and grasping toys around this time, but for others it happens closer to four months. Offering lightweight toys during playtime can help encourage practice.

Social smiles often appear between 6–12 weeks, though timing varies. If your baby occasionally smiles but not consistently yet, it may simply be part of their natural development.

Milestones are general guidelines rather than strict rules. If your baby seems healthy, alert, and gradually developing new skills, they may just be moving at their own pace.

If your baby isn't a big fan of tummy time, you can try chest-to-chest tummy time, holding them upright against your shoulder, or placing them across your lap. These positions still help strengthen neck and upper body muscles.


If there's one thing parents often realize at this stage, it's how quickly things change. One week your baby is quietly observing the world — and the next, they're smiling, cooing, and trying to grab everything within reach.
Every baby develops at their own pace, so try not to worry too much about doing everything perfectly. Offering time to interact, play, and rest is already supporting your baby's development in meaningful ways. Over time, those small everyday moments will naturally turn into new skills and milestones.