Been reading about homo erectus and why their bodies evolved into an upright stance. The theory is that they needed to run to chase down their prey; over a long distance they could single out a gazelle, say, from the herd and gradually wear it down and it would die from heat exhaustion through being continually chased. The gazelle was faster but homo erectus could run for longer.
Got me thinking what I could chase down and eat: Slugs? Too chewy. Snails? Too crunchy. Slow worms? Too rubbery. Hmmm, might have to become a veggie.