1. A baby cannot taste salt until it is 4 months old. The delay may be related to the development of kidneys, which start to process sodium at about that age.


2.A baby’s eyes are 75% of their adult size, but its vision is around 20/400. By six months, a baby’s vision should reach 20/20.


3.Newborns are more likely to turn their head to the right than to the left.


4.Human babies are the only primates who smile at their parents  


5.Up until 7 months old, a baby can breathe and swallow at the same time


6.Babies are always listening - even before they're born. Even a baby as young as two days old will recognize his mother's voice, even if he only hears one single syllable