Ok, so I just heard something weird from my dad that has just scared me...he said that rats and mice can gang up and eat chickens so we should make our coop really armed against even those small vermins. Is that true? Will the rats and mice really chew their way into the coop? I don't get it... then how does everyone else keep their chickens alive outside at night? Is there a extra special design that we must follow to defend our chickens from them?