We met this man at the tribal "village" called Fortaleza.  13 months ago he was bitten by a large caiman when he was fishing at 6 AM. He said he was pulled under water as the beast made several "death rolls". When he got free, both forearm bones were fractured and sticking out of the skin.  He didn't reach medical care until 6 PM that night.  He can't feel much with the lateral fingers, and they aren't very functional either.  The caiman is still out there.