One of the biggest myths about infant sleep is that it steadily and consistently improves – babies start to sleep for longer and longer stretches until finally they make it through the night and you're done. Right? Not exactly true.
I've noticed that even the smallest toddlers, whether they're digging around in the sand at the playground or visiting a friend's house, get the occasional prompt to share and wait their turn.
The younger the child, the more time spent in REM (the dreaming stage of sleep).
Little kids are biologically programmed to become picky eaters, usually starting around 18 months.
Babies have a strong need for "non-nutritive sucking," and as they grow, kids can naturally become very attached to a pacifier for comfort. Saying goodbye is a big deal for some children.