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) to them. Eventually, Superman tracks all the victims of the Vanishing to Metropia, an artificial paradise within the Phantom Zone, where he again encountered Equus, who has allied himself with General Zod, who is on a campaign to destroy Metropia. Equus, whose chestplate bears the Roman numeral "III", was the third version of a program to create super-soldiers. Equus, or "Vee Three" as he was designated, is said to be psychotic, due to the enlargement of the amygdalae to which the OMAC candidates were subjected. Equus III later appears in "Titans/Outsiders Secret Files 2005", stored alongside the Wildebeest, who had