Another thing which troubled him was the fact that he couldn't see his own yellow spots. He would have given a great deal to do so. He could see the yellow spots of other Hawk-Moths who had been Tomato Worms when he was, but that was not like seeing his own. He had tried and tried, and it always ended in the same way--his eyes were tired and his back ached. His body was so much stouter and stiffer than that of his butterfly cousins that he could not bend it easily.