Donkey have worked together with humans for millennia. Traditionally, the scientific name for the donkey is "Equus asinus asinus" based on the principle of priority used for scientific names of animals. However, the International Commission on Zoological Nomenclature ruled in 2003 that if the domestic species and the wild species are considered subspecies of one another, the scientific name of the wild species has priority, even when that subspecies was described after the domestic subspecies. This means that the proper scientific name for the donkey is "Equus africanus asinus" when it is considered a subspecies, and "Equus asinus" when it is
Equus (comics) not being paid by him. Nox reminds him that Equus is there to aid him, but Equus brushes Nox aside, and attacks Superman. Superman is less forgiving in this rematch, using his X-ray and microscopic visions to learn much about Equus' enhancements, and physically disabling much of their exterior components. Equus escapes by activating the weapon, causing not only himself to vanish, but another 300,000 other people from across the planet. Superman subsequently learns that Equus has been working for a mysterious mustached man named Mr. Orr, who explains to Superman that Orr's employer's financed Nox's war, and loaned Equus