My Gigantopithecuses will randomly start walking backwards. Up vote so wildcard can see

These things should wear full body armor and weild weapons!

On mobile, you can actually harvest fiber with them. Just get off of your ape in a bush and they will squat down and gather a good amount of fiber. Like so others can see

Can be set to auto farm fiber by themselves

So I get off joe ( my gigantopithicus lv 246 ) to mine some stone, and then I turn around to see joe battling a lv 451 bronto... flippin legend. He won.