The top of the rainforest is a different world from the bottom, primarily because the main layer of treetops forms a barrier that cuts off most of the light and wind, and a good deal of water, from below. From top to bottom, they are: the emergent layer, the canopy, the understory, and the forest floor. Though the layers are related, each is a distinct world. And the plants and animals that live in each will need characteristics that suit them to the unique conditions of their particular surrounding.
Complete Lesson Plan Rainforest Animals (PDF)