I guess it depends on what you are hunting for. We had no big trouble hunting down armadillos using sticks and rocks without any tools. The hard part was then trying to dress and cook the beastie (ugh).

You're probably not going to have much fortune catching things like big game or prime small game species (waterfowl, rabbits, squirrels, pheasant). You gotta think to scale. Armadillo was easy to catch because he's designed as a deterrent, like skunk and porcupine. Catching small to medium non game species of birds and rodentia isn't all that hard, most of em's stupid as a box of rocks. Of course, there's insects and other squigglies that are more gathered than hunted, I don't suppose you can count those as prey really.

That survivorman is catching and eating mice and such all the time on his show using little bait bits from the bottom of his pockets and such (like a spare frito chip). It ain't much granted, but it is something, and it doesn't require much effort.