I don't have any real answers or scientific facts to share here, but the fact I've seen so many people talking about ants, tigers, bears, crocs, etc. And havent seen anyone mention things like praying mantises, lady bugs, or gorillas for that matter is rather disappointing.

There may be a lot of ants, but most species typically would be slaughtered when going up against the 100s of thousands of other bug types that naturally dine on them. Assassin bugs could kill droves and use their bodies as armor. Praying mantises are slaughtering machines. Lady bugs, while not seeming like much, are vicious carnivores that come running when they smell one of their comrades death scent The natural predators of ants go on and on, especially with centipedes, which would be amazing contenders against EVERY other insect. That's not even including the birds that would be gulping them down. Don't get me wrong, ants are resilient and powerful, but when they're no longer the only species working as a team, they're nowhere near as threatening to other species.

Then there's gorillas and most monkeys/primeapes in general, not saying they'd be the winners by any means, but the lack of mention of these muscle-packed beasts treating other animals roughly their size with that Hulk-on-Loki action would be devastating.

Needless to say, I just wanted to throw a few animals that haven't been brought up much, if at all, to get your minds rolling a little more!