There is something we learn from each animal otherwise Hashem would not have created it. Ask Dovid Hamelech all about it… Spiders, wasps, madmen etc.
If you are talking about a secular report then as Wolf wrote study the food chain that begins and takes part mostly under the ground from moisture and insects to the largest of all creatures is your answer. There’s plenty online on this both in video and text formats that are absolutely fascinating! Niflaos haboreh at its most revealing.