" Not one of these people—not even the policeman himself—had any evidence that the collie was mad. There are not two really rabid dogs seen at large in New York or in any other city in the course of a year. Yet, at the back of the human throat ever lurks that fool cry of “Mad dog!”—ever ready to leap forth into shouted words at the faintest provocation "

― Albert Payson Terhune , Lad: A Dog