By 4 months your baby may

• grab at a toy if it is held close.
• smile at everyone, coo, laugh, especially for their parents.
• squeal happily.
• hold their head steadily when pulled into sitting position.

You can encourage development by:

• propping them up to see what is going on.
• sitting him in a bouncinette (not on a table or high surface).
• giving them tummy time on the floor.
• placing a plastic mirror in front of them.
• talking to them while you are feeding and changing them.