What to know
View photos and videos of developmental milestones that most babies do by one year of age. Milestones are listed by area of child development.

Social/Emotional
Plays games with you, like pat-a-cake
The baby in this video is playing a game like pat-a-cake with his mother, a 1-year social/emotional milestone.
Language/Communication
Waves “bye-bye”
The baby in this video is waving "bye-bye", a 1-year language/communication milestone.
Calls a parent “mama” or “dada” or another special name
The boy is sitting on the floor playing with a baseball glove asking his mom for help with putting it on.
Understands “no” (pauses briefly or stops when you say it)
The baby in this video shows that he understands "no" by pausing briefly and stopping when his parents say it, a 1-year language/communication milestone.
Cognitive
Puts something in a container, like a block in a cup
The baby in this video is putting something in a container, a 1-year cognitive milestone.
Looks for things he sees you hide, like a toy under a blanket
The baby in this video looks for something he sees his parents hide, like a toy under a blanket, a 1-year cognitive milestone.
Movement/Physical
Pulls up to stand

Walks, holding on to furniture
The baby in this video walks, holding on to furniture, a 1-year movement/physical development milestone.
Drinks from a cup without a lid, as you hold it
The baby in this video is drinking from a cup without a lid as someone like a parent holds it, a 1-year movement/physical development milestone.
Picks things up between thumb and pointer finger, like small bits of food
The baby in this video is picking things up between thumb and pointer finger, like small bits of food, a 1-year movement/physical development milestone.