Snakes don't normally kill babies, period. NO native North American snake is going to consider a baby as prey, at all. Snakes do NOT go after anything that they can't eat. Those rare occasions in which a captive python escaped it's poorly constructed cage and attacked a baby or small child are cases of an animal that had been starved and neglected. Snakes do not drink milk, and are not attracted to the scent of it. Pythons hunt using their infrared heat pits on their lips(which most snakes do not have),so they rely as much on body temperature to help them find warm-blooded animals as by scent. Again, pythons are NOT native to the US, and no snake normally hunts humans, babies or otherwise.