Young animals can survive only if they are looked after by strong grown-ups. A gazelle abandoned at birth or bird's eggs left uncared for have no possibility of survival. But young animals usually can survive because they have careful parents who do not neglect their responsibilities, even before their young are still in the egg or the womb. Many creatures go to a lot of trouble to protect their eggs, hiding them where they will not get broken, keeping them warm and when necessary, protecting them from too much heat. They will guard over their eggs for weeks and even carry them around in their mouths without harming them in any way.