If Nasa brings two flies there to let them have a baby, will that count?

@KongoLandwalker Yeah any other animal

In that case I presume you count skin mites. Almost all adults have them, and they reproduce sexually, thus have babies: https://www.vox.com/2014/6/11/5799992/these-mites-live-on-your-face-and-come-out-to-have-sex-at-night ChatGPT suggests that we've spent 25 person-days on the moon, which given the high numbers and fast reproductive cycle of skin mites implies that skin mites have with near certainty had babies on the moon. If you're convinced by the reasoning, I think this can resolve Yes.

Don't freak out, but there are thousands of mites living all over your face

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But that happened before the market creation. And the question is in future tense

True! I guess this will almost certainly resolve yes then as soon as another human or animal from earth lands on the moon.

Question about mammals would be a bit less predictable.