The Bull Age is the period of Boduan Natural History characterized by an earlier form of Mother Lomoi (Boduan), who competed for survival by forcefully uprooting neighbors. It was supplanted by the Mother Age about 6-7 million years ago. 

Uprootings

Main Article: Competitive Uprooting

Between the modern "Mother" species, an uprooting takes about 1,200 years on average, and they occur about every 200 years.

Their predecessors, the "Bull" species, grew much more aggressively. Uprootings are estimated to have occurred around every 50 years on average, with the process averaging about 600 years to elapse.

Effect on Fauna

See also: Fauna of Bodue

The increased precarity of dwellings placed great pressure on oviparous species, and a good number of them went extinct during the Bull Age. Marsupial and viviparous species fared somewhat better, in many cases acquiring a roaming tendency.

Nearly all species on Bodue can now identify when an Uprooting is taking place, and will instinctually avoid the tree that is to be uprooted.

Effect on Flora

See also: Flora of Bodue

The Bull Age brought the near-monopoly of the Lomoi over most of the biomass on Bodue. Flora that relied on symbiotic relationships with Lomoi, whether parasite or epiphyte, flourished and diversified. 

Free-standing plants were almost all wiped out from the various forms of turmoil that Lomoi wrought on their environments. Those that survived evolved to reproduce quickly and spread far, in order to either outrun the Lomoi or grow on their new Pseudofloors.