Found this very interesting article online.
"Oxytocin helps women get through labour by stimulating uterine contractions, which is why it's sometimes administered (as Pitocin) during labor. It's been known to promote delivery and speed up contractions. After birth, mothers can establish intimacy and trust with their baby through gentle touches and even a loving gaze. In addition, mothers can pass on oxytocin to their babies through breast milk. And it's worth noting that fathers can reap the benefits of oxytocin as well; new dads who are given a whiff of oxytocin nasal spray are more likely to encourage their children to explore during playtime and are less likely to be hostile."