Thickly-skinned with tough, leathery hides, Brontotheriums had small ears and eyes, short necks, thick bodies, short tails and short, stout legs with flat, three-toed feet. Above all, however, the rhinos had large, two-pointed horns, with some individuals sporting a thin, two-pointed horn and others one large, flat horn with two dull ends. Brontotheriums usually moved in herds and, when prompted to, were able to run quickly, charging down their path.
Brontotheriums, like many other animals of the ice ages, were among those that migrated with the other herds of animals south for the winters, leaving behind the frozen forests and plains that they had inhabited before.
Few, if any Brontotheriums, resided in the Ice Valley, though one young male was among the younglings that resided in the valley, making use of the naturally-formed ice waterpark. This young male had been among those mammals that had encountered a Tyrannosaurus, a species of animal long since thought extinct. In time, the rhinos were among those animals that existed during the days of the continental drift and made the move out of the land they once lived in, as it was being threatened by the drifting landmasses, making it to a new island home by way of an ocean bound iceberg that they boarded