This is the main encounter in the group task and raid event of the same name (see this quest entry for raid details (and loot) and this quest entry for group details).
There are 3 versions of the raid boss. Goral, Selyrah, and Braxi. Goral almost always drops the 2 basic items listed above(Goral Paw & Goral Fins), but we have also seen it drop Al-Metes a few times and once a Shore Goral Head.