I waited in front of that cave for three days and three nights, which gave 
me plenty of time to scope the place out. At first I was rather cocky about 
this challenge, for it seemed the easiest of the three; while I had no idea who 
or what Dojo was, I knew that in all the world I had never met my equal when it 
came to single combat. But on the first day, sitting there on my tail waiting 
for Dojo, I noticed a sprinkling of small glittering objects on the ground, and 
examining them carefully I realized that they were, in fact, scales. To be 
precise, they were dinosaur scales, which I recognized as belonging to 
Pteranodon, Ankylosaurus, and Utahraptor, and they appeared to have been jarred 
loose from their bodies by powerful impacts.