Your baby's mouth movements now and eventual first words!
Before they were born, your baby could hear the voices of the people around them and they will already recognise your voice. While in the womb they started to develop the muscles needed to make sounds – the sucking reflex began to develop at around 6 months' gestation, so your baby will have been practising sucking and swallowing for a little while before their arrival.[1]
Hearing and making sounds