Also, Feral has control over every situation in the movie up to Tabee using his spear on him. The wolf, the bear, even the hunters, it's all him messing around for fun. The bear scene actually demonstrates this really well, he brawls with the bear, not using his blades, spear or speargun, he is brawling it because he wants a challenge, as soon as he gets tired of playing with the bear, he instantly kills it with a punch that cracks it's head/neck, he had full control, he doesn't mind taking a bit of damage.
Same thing with the hunters, he knew they were planning something, but decided to walk in anyway to give himself a challenge, once he got bored, he killed them all with the mines.