Mail Delivery In Iowa Halted By Threatening Chihuahua

We're all familiar with the stereotype of the mailman thwarted by an angry dog, chomping at his heels as he runs off, leaving a trail of dropped letters behind him. Usually the kind of animal we're picturing is a big, square-headed bruiser at the end of a chain, but one dog is proving that even pint-sized pooches can pack a punch--and mail delivery in Cedar Rapids, Iowa is suffering because of it.