Babies grow up and become siblings, which means they now have someone else to look out for. This 2-year-old big brother is quite observant of how his mommy tends to a baby's needs. When his little sis starts crying, he tries to comfort her with a kiss on the head. To his surprise that doesn't work, so what does he do? Takes after mom and tries to breastfeed the youngster. Via ViralHog.