I thin the best way to know which of the bull is the father of you cow, find the bull that Marcelino has seen last day that the bulls have gone to the fence and let the cow be the bait and of the cow will agree on a bull that the bull could impregnate her again, i think he's the father. Its just my suggestion :)
i believe the answer is: Overindulgence
By overindulging the children, the children would be conditioned in a situation where they do not have to do hard works to obtain what they want. If the parents do not do anything about this, the children would go out to the real world thinking that they could obtain the same level of effort and obtain what they want.