Very true, mattp, these goats are QUITE aggressive for the salt in urine. At the top of Outer Space, I took a piss, and this goat seemed to be irked about it. He started moving toward us (we were reasonably concerned about the 800' drop off behind us), but as we moved aside, his interest remained on my piss. At first I thought he was unsettled by my "marking" of his territory, but later recalled it was the salt he was after. He kept about a 25-30' buffer prior to my urinating, but got VERY close afterwards.
Still, it was an entertaining phenomenon that we met him at the base, and the top.