This was just the first in a near-comical procession of lurking horrors from anaconda that can digest an entire deer to the slivery candiru (parasitic toothpick fish) that can lodge, die and rot in your urethra, from puraques (eels) that can send 650 volts of electricity into their prey to bullet ants whose stings feel like being shot (all dangers we thankfully avoided).

BBC: Taming the heart of the Peruvian Amazon