I was chasing after an otter in the swamps west of the Redwoods, then started searching the trees on my Argy and wound up face-to-face with a Rhynio. It scared the absolute sh*t out of me, these are by far one of, if not the scariest creature in the game because they stay hidden and laying in wait in the trees to ambush you. Of course I flew off and it started chasing us, but thankfully I read another tip on here that said if you fly under a Paracer, it will lose the chase! It worked and me and Rufio are still alive to tell the tale. Flyer beware.