Have you ever done a Bug Battle?
Catch as many bugs as you can, or snails, worms, etc.
Gather them all together and put them under Mom's glass serving dish.
Watch the battle unfold.
We do practice catch and release.
There actually is never much too it. They mostly stay away from eachother. You can tell when the spider is getting mad and the fangs protude and they stand on their hind legs. The snail takes it easy and hidey-holes in it's shell. The worm gets all hard. The roley polley curls up and rolls around.
Early one morning, Paul caught toads at the base of our fence.
I have a ton of pictures over the years of Paul holding up some sort of wildlife for the children. I think it's great. To complete my collection would be Paul holding up a Skunk :))