the definition of species is a group of animals that mate to produce more of the same animals. There is ONE HUMAN SPECIES.
Back in the day there were more than one human species. neanderthal man and homo sapiens existed at the same time, and even now, some people are saying they may have interacted sexually, but it is unlikely. lions can inseminate tigers, but their children are ussually sterile. much like donkey7s and horses can make sterile mules.
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