Well that really depends on your definition of “valid species” (for which there are already lots of discussions, such as this). I’m not sure I can think of any “true species” that have been bred artificially, although there are lots of “subspecies”, “varieties”, hybrids, etc. I’m sure some do exist though (if only because enough people say they do); do you have any particular organism in mind?. And then there’s genetically edited (created?) species, which are a whole separate question…
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