Elephants
The inspiration of Oliphaunts. Oliphaunts were rather large, so it can be inferred that Elephants were a great deal smaller. They were mentioned once by Tolkien at the beginning of The Hobbit, when he mentioned that "There were many Hobbits before people like you and I came marching into the Shire like Elephants." I suppose Elephants lived either in Harad, Rhun, or maybe the far-off Dark land.