Little creatures. Some are alive here and now, some are alive in a parallel universe.
The older they get the more stories they tell. The more places they go the more they know. The more dreams they dream the more complicated they become. The more soap operas they act in the more personality they acquire. The more questions they ask the more strategies they perfect. The more bedtime thoughts they think the more next day things they invent to do.
They more affection they learn to give the more love we give them.