Animal Stories (Readers Series - Stage 1) Once upon a time there were three billy goats. Their name was Gruff. There was Big billy goat Gruff, Middle billy goat Gruff and Little billy goat Gruff. Big billy goat Gruff was a very big goat. He had a thick, black coat and very large horns. He walked with his head high in the air. He was very proud and was not frightened of anything.