Can you imagine that your baby is able to open and shut the mouth as early as 15 weeks? Have you heard that there are so-called differences of the activities between boys and girls at this early age?

Scientists claim that girls make more mouth movements than boys. Allegedly, this is because females are believed to be more developmentally advanced, but other experts may not agree as every baby grows differently.

You may think that mouth movements are not necessary for your child right now. But they will be necessary for a newborn, as he/she must suck milk in order to survive.