That definition of a species is actually quite not intelligent, because by your definition a donkey and a horse are from the same species. Interfertile, shares the same habitat and looks roughly the same. Same goes for coyotes and wolves, with the added bonus that their ofspring (Coywolves) are also fertile (while mules are mostly infertile). There are countless other examples of hybrids (like tiger/lion hybrids, or even humans, it seems that there was some limited interbreeding between ho mo sapiens and ho mo neandertalis, there’s proof of that in our DNA).
Quite funny how many people still don’t seem to understand the difference between a thesis and a theory, scientifically speaking. And quite funny how many people actually were triggered by my above statement.
That definition of a species is actually quite not intelligent, because by your definition a donkey and a horse are from the same species. Interfertile, shares the same habitat and looks roughly the same. Same goes for coyotes and wolves, with the added bonus that their ofspring (Coywolves) are also fertile (while mules are mostly infertile). There are countless other examples of hybrids (like tiger/lion hybrids, or even humans, it seems that there was some limited interbreeding between ho mo sapiens and ho mo neandertalis, there’s proof of that in our DNA).