I genuinely cannot imagine that. It doesn’t make any sense. The only property that is a necessary condition for an egg to be a chicken egg is that it has the potential for a chicken to hatch from it. So what you are describing has an inconsistency and is therefore nonsense. Do you mean an alligator egg that looks like a chicken egg? Because if so, then it’s still an alligator egg.
Literally the only thing that matters is that an alligator hatches from it, so it’s an alligator egg.
If it hatches into an alligator then it’s an alligator egg, so yeah you did mean alligator egg. I actually don’t know what you mean, because what you described doesn’t make sense.
And I do think think that, it belongs to that creature just like you belong to your mom and vice versa. If somone pointed at your mom and said “that’s PeriodicallyPedantic’s mom” and you said “Aha! But how can she be mine when she’s a different person!”, they’d probably just say “the fuck you on about”.
One who laid it. Yes it is, it’s the inhabitant. Yes. No. You mean alligator egg, not chicken egg.
Because it hatches into a chicken, you’re thinking of a chicken’s egg
So I can imagine what you are describing, that is not the issue. It’s just that I would not call that a chicken egg. And I could imagine a world in which it would be, but that’s then not where we reside so it’s not relevant.
Definition of an egg: an animal reproductive body consisting of an ovum together with its nutritive and protective envelopes and having the capacity to develop into a new individual capable of independent existence.