Doctors use certain milestones to tell if a baby is developing as expected. There's a wide range of what's considered normal, so some babies gain skills earlier or later than others. Babies who were born prematurely may reach milestones later. Always talk with your doctor about your baby's progress.
Here are things babies usually do by this age:
Communication and Language Skills
make sounds like ooh and aah (cooing)
turn their head toward your voice
make sounds in response to being spoken to
Movement and Physical Development
use their arms to swing at toys
bring their hands to mouth
hold a toy when you put it in their hand
hold their head steady without support when being held
push up on elbows/forearms when on their tummy
Social and Emotional Development
smile to get your attention
chuckle (not a full laugh) when you try to make them laugh
look at you, move, or make sounds to get or keep your attention
Cognitive Skills (Thinking and Learning)
look at their hands with interest
when hungry, open their mouth if breast or bottle approaches
When Should I Call the Doctor?
You know your baby best. Share your concerns — even little ones — with your baby's doctor.
If your baby is not meeting one or more milestones or you notice that your baby had skills but has lost them, tell your doctor.