It'd be cool if there were big herds of animals, like gazelles and stuff, and you'd have to organize a hunting party and use tactics to take one down. Herd A.I. would be very cool in my opinion. Or, you could try to get smaller prey, like hares, fish, bugs, or mice. You could also drag around (if it was small enough) and eat the prey. It would just serve for roleplaying purposes. And there would be some animals that were so dangerous (like elephants, rhinos, giraffes, or hippos) you either had to leave them alone or hunt them in huge groups.