The Hound and the Hare (Greek Folk Tale)

A young Hound started a Hare, and, when he caught her up, would at one moment snap at her with his teeth as though he were about to kill her, while at another he would let go his hold and frisk about her, as if he were playing with another dog. At last the Hare said, “I wish you would show yourself in your true colours! If you are my friend, why do you bite me? If you are my enemy, why do you play with me?”

He is no friend who plays double.