Ages ago, shrouded within the mists of time, an ancient & forgoten tome of Taru lore entitled "WTF-aru" speaks of a noble class of forgotten Druids.
Previous to the economic oppression brought upon by the Hume ascension, Bastok & its surrounding areas were quite lush, bountiful & ample enough to sustain the hearty appetites of its indigenous race, the Galka.
Feeling the grace of such bounty, the Galka embarked upon a "Natural Spiritualism" and was rewarded by Nature for their servitude to the exent, they were given the ability to transcend their physical restraints.
Having not the corruption of Hume culture and the lacking of Humetic deviation associated by their polytheism, the Galka were able to become other creatures of the natural world.
Galka, by nature, are not mental giants. By forgoing Reason & Critical Thinking, the Galka were compensated by an enormity in spirit that nurtures the Sympathetic arts & it is these arts that led to the rise of the Druidic order. It is, unfortunately, also this same broad scope of sentiment that led to the Order's eventual end.
While strolling through the meadows of South Gustaberg, a strapping young Galka by the name of Running-Gag came across a wounded lemming and his heart bled. Running-Gag's despair was such that his empathy was undeniable, so deep, that he was immediately over come by grief and his pain became manifest in his form. Running-Gag forsake his hulking form for that of a lemming.
Other Galka nearby, learning of this metamorphosis all became grief stricken to the same effect; all were immediately and irrevocably transformed. All became lemmings.
The collective cries could be heard far & wide, even across the sea in the land of Windurst, where their plight has been recorded. It is said, the Galka, all overcome with pain unbearable, plunged over the ravine in North Gustaberg, to their immediate deaths. They were lemmings, after all.
Other legends persist, but this one is prevalent and undeniably true.....really.