Stonehorns are massive beasts of muscle and violence, each several times the size of a Rhinox and - if it can be believed - several times as dense. Intelligence is of little import to these great beasts however, for each Stonehorn is quite literally a living fossil, its skeleton hardened by the same rock as the mountains where it makes its home. As legendary as their hardiness is their belligerence; in fact it is said that a Stonehorn will take any opportunity to headbutt something to death and trample its corpse into paste. Such is its colossal mass that the impact of its charge is like a boulder plummeting from a mountaintop, a deadly combination of weight, momentum and a bad temper.[1a]