What happens when Bruce tries to leave the village of the Yuko Indians after staying there four months?

When Bruce tries to leave the village of the Yuko Indians, he is thrown by his mule about an hour from the village. Bruce has to get all his belonging back into his pack and walk back to the village where his mule headed. After he gets back to the village, he saddles the mule, packs, and leaves again. After three hours, the mule stops, kicks, and throws Bruce over his head. When Bruce tries to approach the mule it kicks him hitting his arm and face. Bruce sleeps in the jungle that night. He is too sick to go on, so he has to return to the village.