Wildlife series. This time, Steve and the crew travel to Venezuela in search of more lethal animal predators for their Deadly list. First, they comb the Venezuelan wetlands looking for the biggest snake in the world - the mighty green anaconda, capable of growing to over six metres in length. Then Steve heads beneath the rainforest into a dark cave infested with vampire bats, where a true toxic terror lurks - the scolopendra, a giant centipede armed with a powerful venomous bite.