animals help us by giving us meat. Some animals even give us excitement.But if animals get dieses, we would eat their meat and get sick.Or, they might get rabies and attack us.

Yes. David was wearing special clothes that insulated him so he didn't get hurt. But, it was a little unsafe because accidents happen.When he got electrified his suit protected him not only because it insulated but because it was made of metal.the electricity was atracted to the suit, not him.