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) been captured in the same story. Equus reappeared under Mr. Orr's command in "Countdown" #36 (2007), clashing with Karate Kid and Triplicate Girl. After receiving a beating from Karate Kid, Equus was enraged that Mr. Orr, under Desaad's orders, would let them go. Equus severs the railroad tracks on which Karate Kid and Triplicate Girl's train is traveling, after having phoned the police, telling them that the derailment is a metahuman attack, and that the metahumans themselves are bio-weapons, leading the officers to shoot first and not ask questions. Karate Kid and Una eventually are able to beat Equus, disabling