I remember killing bears and lizards to spawn a ton of these right inside the zone from lake rathe. Well after killing quite a few I've come to the realization that they aren't PH at all. So I did a little digging, and found some old posts from people saying the same thing I remembered. Hopefully I'm on the right track.
One big posts here covering everything I thought was true
http://web.archive.org/web/200206252....shtml?id=3066
Another post here from someone else saying basically the same thing
http://web.archive.org/web/200107170....shtml?id=3066