Green pit viper can kill in 2 hours - rubbish!
In the Guatemala episode, Bear spots a green pit viper and says it can kill you in 2 hours if you don't get treatment. This is rubbish, according to:
http://en.wikipedia.org/wiki/Green_pit_viper
"The venom is primarily haemotoxic, with victims experiencing severe pain, swelling of the bitten area, oedema and localised tissue necrosis. However, fatalities have not been reported."
So, basically, no one has ever died from this snake (that we know of). No wonder why Bear was so completely calm being about a meter from the snake up in a tree.