The bighorn bison, a towering behemoth, roams tall-grassed steppes from one forage site to the next. Two massive horns spiral upward from the base of its skull, and another pair curls outward and down. The polycerate bovine's face is covered with additional lesser horns and keratinous growth, creating a warlike visage both fearsome and defensively practical. The bighorn bison will use its immense bulk and natural weapons to stampede a destruction upon any foe that frightens or enrages it.

The bighorn bison stands over 8 feet tall and weighs over 2,000 pounds. Also called the steppe bison, it often appears docile, even lazy, but may fly into a rage unpredictably, often without reason. The most dangerous time for others is middle summer to late autumn when the bison enter mating season.

The bighorn bison is an herbivore, preferring woody plants that are prevalent on prairies, plains, and some river valleys. A bighorn bison does not enjoy the company of other bison species, often becoming violent if pushed to occupy the same area; in fact, a herd of bighorn will charge and violently displace any other species' herds and will not willingly mate with them.