The following thing after the reproduction is the baby, and when we have a baby we become to be father and mother suddenly. These will make us to have the instinct of surviving naturally; although, it expresses more obvious in women because she has to be enceinte for 8 or 9 months, so in this time she will be deeply loving her baby. Moreover, it is the instinct of motherhood for pregnant woman, her mood will be somewhat distorted and more sensitive about the baby than normal especially when she is watching movies or advertises about children she will cry more easily than normal. When a woman becomes a mother, brain will secrete several hormones out and one of them is Oxytocin or hormone of love which enable woman to very caring and want to protect her children, it can be seen by the news that mother died for her baby, also the mother can recognize the unique smell of their children by this hormone. If the woman becomes mother, she will reduce selfishness for her children and she will give their children something better and can be embarrassing for her children. Some poor families’ mother can work so hard to get much money for their children to be comfortable. Another example is when we went to shopping mall, we can see mother breastfeed her baby in public. She has ever been embarrassed before but when she is mother she will always think about her children first because she wants the best thing to baby such as her milk. In addition, when mother is feeding her milk to baby, her body will secrete a hormone, called Prolactin, which makes mother feel relaxed in the first month but will feel tired after that. Interestingly, during breastfeeding, it could also reduce the sexual desire of the mother in order to take more time take care her baby.