Avira – I did you a favor and found a source:
Behold my works, how pleasant and how beautiful they are. And I created it all for you! Be aware and don’t ruin or destroy my world, for if you ruin it, there is no one to come and fix it up after you.
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–Midrash: Ecclesiastes Rabbah, 7:20
Also look into the topic of shiluach hakan and lo sevashel g’di b’chalev imo- the idea that we aren’t allowed to take or kill a mother animal along with its child, because it gives off the appearance of destroying the entire species.