I heard a short story that was said to have been on the internet... can't find it. Elder Grandfather telling story to child re: an evil dragon and good dragon that gives the lesson of hate over love... which one wins? Asks the child. The one you feed, replies the Grandfather. Has anyone seen? Need the correct story.

I originally heard it as a Native American tale of two wolves, told by the grandfather to the grandson.. . Perhaps that will help you?