'so he did mean blood' Nybras thought 'so he's hinting each riddle with his actions' though is wasn't needed on the next one, he'd actually heard this one before, it was referring to the way humans commonly age, how they crawl when newly born, the four legs in the morning, learn to walk on two feet when they've grown, the evening, and when they've grown old they use a cane for support, the third leg. "Humans" he said, it was the most common answer at least...