Steve's epic adventure from the top to the bottom of the planet has reached Guyana in South America. This is a land of jungle giants and the team is on a search for supersized deadly critters. Steve's first encounter is with a two-metre long snake, but even this giant can't measure up to his next chilling discovery - the world's largest spider. Reaching the size of a dinner plate, it has huge venom-injecting fangs that it uses to hunt birds and snakes. Next Steve heads out onto the sun-baked savannah to track down a titanic termite terminator, the giant anteater. Finally Steve climbs 40 metres up into the trees to find a colossal canopy killer, the majestic but rarely seen harpy eagle.