Almost half the world's species lives in Amazonia, where conditions are nearly perfect for their continuing survival. Food sources abound for carnivores and herbivores alike. The film crew for this series records harpy eagles big enough to carry monkeys, whose acrobatic skills cannot always save them from being prey. They record the infamous tree sloths, whose extreme inactivity can trigger algae growth on their bodies. Journey into Amazonia, Episode 3: The Big Top examines the life and death drama that occurs daily in the canopy more than 100 feet above the forest floor