What most babies do at 4 months

Social and Emotional

Smiles spontaneously, especially at people

Likes to play with people and might cry when playing stops

Copies some movements and facial expressions, like smiling or frowning

Language/Communication

Begins to babble

Babbles with expression and copies sounds he hears

Cries in different ways to show hunger, pain, or being tired

Cognitive (learning, thinking, problem-solving)

Lets you know if she is happy or sad

Responds to affection

Reaches for toy with one hand

Uses hands and eyes together, such as seeing a toy and reaching for it

Follows moving things with eyes from side to side

Watches faces closely

Recognizes familiar people and things at a distance

Movement/Physical Development

Holds head steady, unsupported

Pushes down on legs when feet are on a hard surface

May be able to roll over from tummy to back

Can hold a toy and shake it and swing at dangling toys

Brings hands to mouth

When lying on stomach, pushes up to elbows