Thereupon the father grew very angry at Jack and his love for him changed to hatred, and one day he spoke to a robber and promised him much money if he would take Jack away into the forest and kill him there and bring back his heart to show that he had done what he had promised. But instead of doing this the robber told Jack all about it and advised him to flee away, while the robber took back to Jack's father the heart of a deer saying that it was Jack's. Then Jack travelled on and on till one night he stopped at a castle on the way; and while they were all supping together in the castle hall the dogs in the court-yard began barking and baying. And Jack went up to the lord of the castle and said, "There will be an attack upon the castle to-night."
"How do you know that?" asked the lord.
"The dogs say so," said Jack.
At that the lord and his men laughed, but never-the-less put an extra guard around the castle that night, and, sure enough, the attack was made, which was easily beaten off because the men were prepared. So the lord gave Jack a great reward for warning him, and he went on his way with a fellow traveller who had heard him warn the lord.
Soon afterwards they arrived at another castle in which the lord's daughter was lying sick unto death; and a great reward had been offered to him that should cure her. Now Jack had been listening to the frogs as they were croaking in the moat
