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.