Hello! I've been trying to get our group to try Starvation - a few did but they're saying that there's way too many animals and wanted to see if I could cut some of them out or reduce their numbers. I play it unmodded just fine

They'd like me to cut out the scorpions, spiders and snakes. For the spider nests I figure I could change the nest to say for instance a block of fertilizer to stop it from existing and therefore spawning any spiders. For the animals and such - it looks extremely complicated and I'm not sure how to proceed. Can anyone give a hand please?
Thank you for your time and attention!